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@ -1,6 +1,6 @@
Asterisk OSP Module User Guide OSP User Guide for Asterisk V1.6
June 16, 2006 4 January 2007
Table of Contents Table of Contents
1 Introduction 1 Introduction
@ -13,70 +13,73 @@ Table of Contents
2.1.5 Building the Enrollment Utility 2.1.5 Building the Enrollment Utility
2.2 Obtain Crypto Files 2.2 Obtain Crypto Files
3 Asterisk 3 Asterisk
3.1 OSP Support Implementation 3.1 Configure for OSP Support
3.1.1 OSPAuth 3.1.1 Build Asterisk with OSP Toolkit
3.1.2 OSPLookup 3.1.2 osp.conf
3.1.3 OSPNext 3.1.3 extensions.conf
3.1.4 OSPFinish 3.1.4 zapata/sip/iax/h323/ooh323.conf
3.2 Build with OSP Support 3.2 OSP Dial Plan Functions
3.3 Configure with OSP Support 3.2.1 OSPAuth
3.3.1 osp.conf 3.2.2 OSPLookup
3.3.2 zapata/sip/iax.conf 3.2.3 OSPNext
3.3.3 extensions.conf 3.2.4 OSPFinish
3.3 extensions.conf Examples
3.3.1 Source Gateway
3.3.2 Destination Gateway
3.3.3 Proxy
Asterisk is a trademark of Digium, Inc. Asterisk is a trademark of Digium, Inc.
TransNexus and OSP Secured are trademarks of TransNexus, Inc. TransNexus and OSP Secures are trademarks of TransNexus, Inc.
1 Introduction 1 Introduction
This document provides instructions on how to build and configure Asterisk This document provides instructions on how to build and configure Asterisk
V1.4 with the OSP Toolkit to enable secure, multi-lateral peering. The OSP V1.6 with the OSP Toolkit to enable secure, multi-lateral peering. This
Toolkit is an open source implementation of the OSP peering protocol and is document is also available in the Asterisk source package as doc/osp.txt.
freely available from www.sipfoundry.org. The OSP standard defined by the The OSP Toolkit is an open source implementation of the OSP peering protocol
European Telecommunications Standards Institute (ETSI TS 101 321) and is freely available from www.sipfoundry.org. The OSP standard defined by
the European Telecommunications Standards Institute (ETSI TS 101 321)
www.esti.org. If you have questions or need help, building Asterisk with the www.esti.org. If you have questions or need help, building Asterisk with the
OSP Toolkit, please post your question on the OSP mailing list at OSP Toolkit, please post your question on the OSP mailing list at
https://list.sipfoundry.org/mailman/listinfo/osp. https://list.sipfoundry.org/mailman/listinfo/osp.
2 OSP Toolkit 2 OSP Toolkit
Please reference the OSP Toolkit document "How to Build and Test the OSP Please reference the OSP Toolkit document "How to Build and Test the OSP
Toolkit" available from www.sipfoundry.org/OSP/OSPclient . Toolkit" available from https://www.sipfoundry.org/OSPclient.
2.1 Build OSP Toolkit 2.1 Build OSP Toolkit
The software listed below is required ti build and use the OSP Toolkit: The software listed below is required to build and use the OSP Toolkit:
* OpenSSL (required for building) - Open Source SSL protocol and * OpenSSL (required for building) - Open Source SSL protocol and Cryptographic
Cryptographic Algorithms (version 0.9.7g recommended) from www.openssl.org. Algorithms (version 0.9.7g recommended) from www.openssl.org. Pre-compiled
Pre-compiled OpenSSL binary packages are not recommended because of the OpenSSL binary packages are not recommended because of the binary
binary compatibility issue. compatibility issue.
* Perl (required for building) - A programming language used by OpenSSL for * Perl (required for building) - A programming language used by OpenSSL for
compilation. Any version of Perl should work. One version of Perl is compilation. Any version of Perl should work. One version of Perl is
available from www.activestate.com/ActivePerl. If pre-compiled OpenSSL available from www.activestate.com/Products/ActivePer. If pre-compiled
packages are used, Perl package is not required. OpenSSL packages are used, Perl package is not required.
* C compiler (required for building) - Any C compiler should work. The GNU * C compiler (required for building) - Any C compiler should work. The GNU
Compiler Collection from www.gnu.org is routinely used for building the OSP Compiler Collection from www.gnu.org is routinely used for building the OSP
Toolkit for testing. Toolkit for testing.
* OSP Server (required for testing) - Access to any OSP server should work. * OSP Server (required for testing) - Access to any OSP server should work.
Open source OSP servers are available from www.sipfoundry.org/osp, a free Open source OSP servers are available from https://www.sipfoundry.org/OSP,
commercial OSP server may be downloaded from www.transnexus.com and an OSP or go to http://www.transnexus.com/OSP%20Toolkit/Peering_Server/VoIP_Peering_Server.htm
server osptestserver.transnexus.com is freely available on the internet for to download a free commercial OSP server.
testing for testing. Please contact support@transnexus.com for testing access
to osptestserver.transnexus.com.
2.1.1 Unpacking the Toolkit 2.1.1 Unpacking the Toolkit
After downloading the OSP Toolkit (version 3.3.4 or later release) from After downloading the OSP Toolkit (version 3.3.6 or later release) from
www.sipfoundry.org, perform the following steps in order: www.sipfoundry.org, perform the following steps in order:
1) Copy the OSP Toolkit distribution into the directory where it will reside, 1) Copy the OSP Toolkit distribution into the directory where it will reside.
say /usr/src. The default directory for the OSP Toolkit is /usr/src.
2) Un-package the distribution file by executing the following command: 2) Un-package the distribution file by executing the following command:
gunzip -c OSPToolkit-###.tar.gz | tar xvf - gunzip -c OSPToolkit-###.tar.gz | tar xvf -
Where ### is the version number separated by underlines. For example, if Where ### is the version number separated by underlines. For example, if
the version is 3.3.4, then the above command would be: the version is 3.3.6, then the above command would be:
gunzip -c OSPToolkit-3_3_4.tar.gz | tar xvf - gunzip -c OSPToolkit-3_3_6.tar.gz | tar xvf -
A new directory (TK-3_3_4-20051103) will be created within the same directory A new directory (TK-3_3_6-20060303) will be created within the same
as the tar file. directory as the tar file.
3) Go to the TK-3_3_4-20051103 directory by running this command: 3) Go to the TK-3_3_6-20060303 directory by running this command:
cd TK-3_3_4-20051103 cd TK-3_3_6-20060303
Within this directory, you will find directories and files similar to what is Within this directory, you will find directories and files similar to what
listed below if the command "ls -F" is executed): is listed below if the command "ls -F" is executed):
ls -F ls -F
enroll/ enroll/
RelNotes.txt lib/ RelNotes.txt lib/
@ -95,18 +98,17 @@ TransNexus and OSP Secured are trademarks of TransNexus, Inc.
6) Copy the OpenSSL library files (libcrypto.a and libssl.a) into the lib 6) Copy the OpenSSL library files (libcrypto.a and libssl.a) into the lib
directory within the osptoolkit directory. The OpenSSL library files are directory within the osptoolkit directory. The OpenSSL library files are
located under the openssl directory. located under the openssl directory.
Note: Since the Asterisk requires the OpenSSL package. If the OpenSSL package Note: Since the Asterisk requires the OpenSSL package. If the OpenSSL
has been installed, 4~6 are not necessary. package has been installed, steps 4 through 6 are not necessary.
2.1.3 Building the OSP Toolkit
7) Optionally, change the install directory of the OSP Toolkit. Open the 7) Optionally, change the install directory of the OSP Toolkit. Open the
Makefile in the /usr/src/TK-3_3_4-20051103/src directory, look for the Makefile in the /usr/src/TK-3_3_6-20060303/src directory, look for the
install path variable - INSTALL_PATH, and edit it to be anywhere you want install path variable - INSTALL_PATH, and edit it to be anywhere you want
(defaults /usr/local). (defaults /usr/local).
Note: Please change the install path variable only if you are familiar with Note: Please change the install path variable only if you are familiar
both the OSP Toolkit and the Asterisk. Otherwise, it may case that the with both the OSP Toolkit and the Asterisk.
Asterisk does not support the OSP protocol.
8) From within the OSP Toolkit directory (/usr/src/TK-3_3_4-20051103), start 2.1.3 Building the OSP Toolkit
8) From within the OSP Toolkit directory (/usr/src/TK-3_3_6-20060303), start
the compilation script by executing the following commands: the compilation script by executing the following commands:
cd src cd src
make clean; make build make clean; make build
@ -114,63 +116,55 @@ TransNexus and OSP Secured are trademarks of TransNexus, Inc.
2.1.4 Installing the OSP Toolkit 2.1.4 Installing the OSP Toolkit
The header files and the library of the OSP Toolkit should be installed. The header files and the library of the OSP Toolkit should be installed.
Otherwise, you must specify the OSP Toolkit path for the Asterisk. Otherwise, you must specify the OSP Toolkit path for the Asterisk.
9) Use the same script to install the Toolkit. 9) Use the make script to install the Toolkit.
make install make install
The make script is also used to install the OSP Toolkit header files and the The make script is also used to install the OSP Toolkit header files and
library into the INSTALL_PATH specified in the Makefile. the library into the INSTALL_PATH specified in the Makefile.
Note: Please make sure you have the rights to access the INSTALL_PATH Note: Please make sure you have the rights to access the INSTALL_PATH
directory. For example, in order to access /usr/local directory, normally, directory. For example, in order to access /usr/local directory,
you should be root. root privileges are required.
By default, the OSP Toolkit is compiled in the production mode. The following
table identifies which default features are activated with each compile
option:
Default Feature Production Development
Debug Information Displayed No Yes
The "Development" option is recommended for a first time build. The CFLAGS
definition in the Makefile must be modified to build in development mode.
2.1.5 Building the Enrollment Utility 2.1.5 Building the Enrollment Utility
Device enrollment is the process of establishing a trusted cryptographic Device enrollment is the process of establishing a trusted cryptographic
relationship between the VoIP device and the OSP Server. The Enroll program relationship between the VoIP device and the OSP Server. The Enroll program is
is a utility application for establishing a trusted relationship between and a utility application for establishing a trusted relationship between an OSP
OSP client and an OSP server. Please see the document "Device Enrollment" at client and an OSP server. Please see the document "Device Enrollment" at
www.sipfoundry.org/OSP/OSPclient for more information about the enroll https://www.sipfoundry.org/OSPclient for more information about the enroll
application. application.
10) From within the OSP Toolkit directory (/usr/src/TK-3_3_4-20051103), 10) From within the OSP Toolkit directory (example:
execute the following commands at the command prompt: /usr/src/TK-3_3_6-20060303), execute the following commands at the command
prompt:
cd enroll cd enroll
make clean; make linux make clean; make linux
Compilation is successful if there are no errors anywhere in the compiler Compilation is successful if there are no errors in the compiler output.
output. The enroll program is now located in the The enroll program is now located in the OSP Toolkit/bin directory
/usr/src/TK-3_3_4-20051103/bin directory. By this point, a fully functioning (example: /usr/src/ TK-3_3_6-20060303/bin).
OSP Toolkit should have been successfully built.
2.2 Obtain Crypto Files 2.2 Obtain Crypto Files
The OSP module in Asterisk requires three crypto files containing local The OSP module in Asterisk requires three crypto files containing a local
certificate (localcert.pem), private key (pkey.pem), and CA certificate certificate (localcert.pem), private key (pkey.pem), and CA certificate
(cacert_0.pem). Asterisk will try to load the files from the Asterisk (cacert_0.pem). Asterisk will try to load the files from the Asterisk
public/private key directory - /var/lib/asterisk/key. If the files are not public/private key directory - /var/lib/asterisk/keys. If the files are not
present, the OSP module will not start and the Asterisk will not support the present, the OSP module will not start and the Asterisk will not support the
OSP protocol. Use the enroll.sh script from the toolkit distribution to OSP protocol. Use the enroll.sh script from the toolkit distribution to
enroll the Asterisk OSP module with an OSP server to obtain the crypto files. enroll Asterisk with an OSP server and obtain the crypto files. Documentation
Documentation explaining how to use the enroll.sh script (Device Enrollment) explaining how to use the enroll.sh script (Device Enrollment) to enroll with
to enroll with an OSP server is available at an OSP server is available at https://www.sipfoundry.org/OSPclient. Copy the
www.sipfoundry.org/OSP/ospclient. Copy the files file generated by the files generated by the enrollment process to the Asterisk
enrollment process to the Asterisk configuration directory. /var/lib/asterisk/keys directory.
Note: The osptestserver.transnexus.com is configured only for sending and Note: The osptestserver.transnexus.com is configured only for sending and
receiving non-SSL messages, and issuing signed tokens. If you need help, post receiving non-SSL messages, and issuing signed tokens. If you need help,
a message on the OSP mailing list of www.sipfoundry.org or send an e-mail to post a message on the OSP mailing list of www.sipfoundry.org or send an
support@transnexus.com. e-mail to support@transnexus.com.
The enroll.sh script takes the domain name or IP addresses of the OSP servers The enroll.sh script takes the domain name or IP addresses of the OSP servers
that the OSP Toolkit needs to enroll with as arguments, and then generates that the OSP Toolkit needs to enroll with as arguments, and then generates pem
pem files - cacert_#.pem, certreq.pem, localcert.pem, and pkey.pem. The '#' files - cacert_#.pem, certreq.pem, localcert.pem, and pkey.pem. The "#" in the
in the cacert file name is used to differentiate the ca certificate file cacert file name is used to differentiate the ca certificate file names for
names for the various SP's (OSP servers). If only one address is provided at the various SP's (OSP servers). If only one address is provided at the command
the command line, cacert_0.pem will be generated. If 2 addresses are provided line, cacert_0.pem will be generated. If 2 addresses are provided at the
at the command line, 2 files will be generated - cacert_0.pem and command line, 2 files will be generated - cacert_0.pem and cacert_1.pem, one
cacert_1.pem, one for each SP. The example below shows the usage when the for each SP (OSP server). The example below shows the usage when the client
client is registering with osptestserver.transnexus.com. If all goes well, is registering with osptestserver.transnexus.com.
the following text will be displayed. The gray boxes indicate required input.
./enroll.sh osptestserver.transnexus.com ./enroll.sh osptestserver.transnexus.com
Generating a 512 bit RSA private key Generating a 512 bit RSA private key
........................++++++++++++ ........................++++++++++++
@ -213,69 +207,359 @@ TransNexus and OSP Secured are trademarks of TransNexus, Inc.
verify return:1 verify return:1
The certificate request was successful. The certificate request was successful.
Error Code returned from localcert command : 0 Error Code returned from localcert command : 0
The files generated should be copied to the /var/lib/asterisk/key The files generated should be copied to the /var/lib/asterisk/keys directory.
directory.
Note: The script enroll.sh requires AT&T korn shell (ksh) or any of its Note: The script enroll.sh requires AT&T korn shell (ksh) or any of its
compatible variants. The /usr/src/TK-3_3_4-20051103/bin directory should be compatible variants. The /usr/src/TK-3_3_6-20060303/bin directory should
in the PATH variable. Otherwise, enroll.sh cannot find the enroll file. be in the PATH variable. Otherwise, enroll.sh cannot find the enroll
file.
3 Asterisk 3 Asterisk
In Asterisk, all OSP support is implemented as dial plan functions. In
Asterisk V1.6, all combinations of routing between OSP and non-OSP enabled
networks using any combination of SIP, H.323 and IAX protocols are fully
supported. Section 3.1 describes the three easy steps to add OSP support to
Asterisk:
1. Build Asterisk with OSP Toolkit
2. Configure osp.conf file
3. Cut and paste to extensions.conf
Sections 3.2 and 3.3 provide a detailed explanation of OSP dial plan functions
and configuration examples. The detailed information provided in Sections 3.2
and 3.3 is not required for operating Asterisk with OSP, but may be helpful to
developers who want to customize their Asterisk OSP implementation.
3.1 Configure for OSP Support
3.1.1 Build Asterisk with OSP Toolkit
The first step is to build Asterisk with the OSP Toolkit. If the OSP Toolkit
is installed in the default install directory, /usr/local, no additional
configuration is required. Compile Asterisk according to the instructions
provided with the Asterisk distribution.
If the OSP Toolkit is installed in another directory, such as /myosp, Asterisk
must be configured with the location of the OSP Toolkit. See the example
below.
--with-osptk=/myosp
Note: Please change the install path only if you familiar with both the OSP
Toolkit and the Asterisk. Otherwise, the change may result in Asterisk
not supporting the OSP protocol.
3.1.2 osp.conf
The /etc/asterisk/osp.conf file, shown below, contains configuration
parameters for using OSP. Two parameters, servicepoint and source must be
configured. The default values for all other parameters will work well for
standard OSP implementations.
;
; Open Settlement Protocol Sample Configuration File
;
; This file contains configuration of OSP server providers that
; are used by the Asterisk OSP module. The section "general" is
; reserved for global options. All other sections describe specific
; OSP Providers. The provider "default" is used when no provider is
; otherwise specified.
:
: The "servicepoint" and "source" parameters must be configured. For
; most implementations the other parameters in this file can be left
; unchanged.
;
[general]
;
; Enable cryptographic acceleration hardware.
;
accelerate=no
;
; Defines the status of tokens that Asterisk will validate.
; 0 - signed tokens only
; 1 - unsigned tokens only
; 2 - both signed and unsigned
; The default value is 0, i.e. the Asterisk will only validate signed
; tokens.
;
tokenformat=0
;
[default]
;
; List all service points (OSP servers) for this provider. Use
; either domain name or IP address. Most OSP servers use port 1080.
;
;servicepoint=http://osptestserver.transnexus.com:1080/osp
servicepoint=http://OSP server IP:1080/osp
;
; Define the "source" device for requesting OSP authorization.
: This value is usually the domain name or IP address of the
: the Asterisk server.
;
;source=domain name or [IP address in brackets]
source=[host IP]
;
; Define path and file name of crypto files.
; The default path for crypto file is /var/lib/asterisk/keys. If no
; path is defined, crypto files should be in
; /var/lib/asterisk/keys directory.
;
; Specify the private key file name.
; If this parameter is unspecified or not present, the default name
; will be the osp.conf section name followed by "-privatekey.pem"
; (for example: default-privatekey.pem)
;
privatekey=pkey.pem
;
; Specify the local certificate file.
; If this parameter is unspecified or not present, the default name
; will be the osp.conf section name followed by "- localcert.pem "
; (for example: default-localcert.pem)
;
localcert=localcert.pem
;
; Specify one or more Certificate Authority key file names. If none
; are listed, a single Certificate Authority key file name is added
; with the default name of the osp.conf section name followed by
; "-cacert_0.pem " (for example: default-cacert_0.pem)
;
cacert=cacert_0.pem
;
; Configure parameters for OSP communication between Asterisk OSP
; client and OSP servers.
;
; maxconnections: Max number of simultaneous connections to the
; provider OSP server (default=20)
; retrydelay: Extra delay between retries (default=0)
; retrylimit: Max number of retries before giving up (default=2)
; timeout: Timeout for response in milliseconds (default=500)
;
maxconnections=20
retrydelay=0
retrylimit=2
timeout=500
;
; Set the authentication policy.
; 0 - NO - Accept all calls.
; 1 - YES - Accept calls with valid token or no token.
; Block calls with invalid token.
; 2 - EXCLUSIVE - Accept calls with valid token.
; Block calls with invalid token or no token.
; Default is 1,
;
authpolicy=1
;
; Set the default destination protocol. The OSP module supports
; SIP, H323, and IAX protocols. The default protocol is set to SIP.
;
defaultprotocol=SIP
3.1.3 extensions.conf
OSP functions are implemented as dial plan functions in the extensions.conf
file. To add OSP support to your Asterisk server, simply copy and paste the
text box below to your extensions.conf file. These functions will enable your
Asterisk server to support all OSP call scenarios. Configuration of your
Asterisk server for OSP is now complete.
[globals]
DIALOUT=Zap/1
[SrcGW] ; OSP Source Gateway
exten => _XXXX.,1,NoOp(OSPSrcGW)
; Set calling number if necessary
exten => _XXXX.,n,Set(CALLERID(numner)=1234567890)
; OSP lookup using default provider, if fail/error jump to lookup+101
exten => _XXXX.,n(lookup),OSPLookup(${EXTEN}||j)
; Deal with outbound call according to protocol
exten => _XXXX.,n,Macro(outbound)
; Dial to destination, 60 timeout, with call duration limit
exten => _XXXX.,n,Dial(${OSPDIALSTR},60,oL($[${OSPOUTTIMELIMIT}*1000]))
; Wait 1 second
exten => _XXXX.,n,Wait,1
; Hangup
exten => _XXXX.,n,Hangup
; Deal with OSPLookup fail/error
exten => _XXXX.,lookup+101,Hangup
exten => h,1,NoOp()
; OSP report usage
exten => h,n,OSPFinish(${HANGUPCAUSE})
[DstGW] ; OSP Destination Gateway
exten => _XXXX.,1,NoOp(OSPDstGW)
; Deal with inbound call according to protocol
exten => _XXXX.,n,Macro(inbound)
; Validate token using default provider, if fail/error jump to auth+101
exten => _XXXX.,n(auth),OSPAuth(|j)
; Ringing
exten => _XXXX.,n,Ringing
; Wait 1 second
exten => _XXXX.,n,Wait,1
; Check inbound call duration limit
exten => _XXXX.,n,GoToIf($[${OSPINTIMELIMIT}=0]?100:200)
; Without duration limit
exten => _XXXX.,100,Dial(${DIALOUT},15,o)
exten => _XXXX.,n,Goto(1000)
; With duration limit
exten => _XXXX.,200,Dial(${DIALOUT},15,oL($[${OSPINTIMELIMIT}*1000]))
exten => _XXXX.,n,Goto(1000)
; Wait 1 second
exten => _XXXX.,1000,Wait,1
; Hangup
exten => _XXXX.,n,Hangup
; Deal with OSPAuth fail/error
exten => _XXXX.,auth+101,Hangup
exten => h,1,NoOp()
; OSP report usage
exten => h,n,OSPFinish(${HANGUPCAUSE})
[GeneralProxy] ; Proxy
exten => _XXXX.,1,NoOp(OSP-GeneralProxy)
; Deal with inbound call according to protocol
exten => _XXXX.,n,Macro(inbound)
; Validate token using default provider, if fail/error jump to auth+101
exten => _XXXX.,n(auth),OSPAuth(|j)
; OSP lookup using default provider, if fail/error jump to lookup+101
exten => _XXXX.,n(lookup),OSPLookup(${EXTEN}||j)
; Deal with outbound call according to protocol
exten => _XXXX.,n,Macro(outbound)
; Dial to destination, 14 timeout, with call duration limit
exten => _XXXX.,n,Dial(${OSPDIALSTR},14,oL($[${OSPOUTTIMELIMIT}*1000]))
; OSP lookup next destination using default provider, if fail/error jump to next1+101
exten => _XXXX.,n(next1),OSPNext(${HANGUPCAUSE}||j)
; Deal with outbound call according to protocol
exten => _XXXX.,n,Macro(outbound)
; Dial to destination, 15 timeout, with call duration limit
exten => _XXXX.,n,Dial(${OSPDIALSTR},15,oL($[${OSPOUTTIMELIMIT}*1000]))
; OSP lookup next destination using default provider, if fail/error jump to next2+101
exten => _XXXX.,n(next2),OSPNext(${HANGUPCAUSE}||j)
; Deal with outbound call according to protocol
exten => _XXXX.,n,Macro(outbound)
; Dial to destination, 16 timeout, with call duration limit
exten => _XXXX.,n,Dial(${OSPDIALSTR},16,oL($[${OSPOUTTIMELIMIT}*1000]))
; Hangup
exten => _XXXX.,n,Hangup
; Deal with OSPAuth fail/error
exten => _XXXX.,auth+101,Hangup
; Deal with OSPLookup fail/error
exten => _XXXX.,lookup+101,Hangup
; Deal with OSPNext fail/error
exten => _XXXX.,next1+101,Hangup
; Deal with OSPNext fail/error
exten => _XXXX.,next2+101,Hangup
exten => h,1,NoOp()
; OSP report usage
exten => h,n,OSPFinish(${HANGUPCAUSE})
[macro-inbound]
exten => s,1,NoOp(inbound)
; Get inbound protocol
exten => s,n,Set(CHANTECH=${CUT(CHANNEL,/,1)})
exten => s,n,GoToIf($["${CHANTECH}"="H323"]?100)
exten => s,n,GoToIf($["${CHANTECH}"="IAX2"]?200)
exten => s,n,GoToIf($["${CHANTECH}"="SIP"]?300)
exten => s,n,GoTo(1000)
; H323 --------------------------------------------------------
; Get peer IP
exten => s,100,Set(OSPPEERIP=${H323CHANINFO(peerip)})
; Get OSP token
exten => s,n,Set(OSPINTOKEN=${H323CHANINFO(osptoken)})
exten => s,n,GoTo(1000)
; IAX ----------------------------------------------------------
; Get peer IP
exten => s,200,Set(OSPPEERIP=${IAXPEER(CURRENTCHANNEL)})
; Get OSP token
exten => s,n,Set(OSPINTOKEN=${IAXCHANINFO(osptoken)})
exten => s,n,GoTo(1000)
; SIP ----------------------------------------------------------
; Get peer IP
exten => s,300,Set(OSPPEERIP=${SIPCHANINFO(peerip)})
; Get OSP token
exten => s,n,Set(OSPINTOKEN=${SIP_HEADER(P-OSP-Auth-Token)})
exten => s,n,GoTo(1000)
; --------------------------------------------------------------
exten => s,1000,MacroExit
[macro-outbound]
exten => s,1,NoOp(outbound)
; Set calling number which may be translated
exten => s,n,Set(CALLERID(number)=${OSPCALLING})
; Check destinatio protocol
exten => s,n,GoToIf($["${OSPTECH}"="H323"]?100)
exten => s,n,GoToIf($["${OSPTECH}"="IAX2"]?200)
exten => s,n,GoToIf($["${OSPTECH}"="SIP"]?300)
; Something wrong
exten => s,n,Hangup
exten => s,n,GoTo(1000)
; H323 --------------------------------------------------------
; Set call id
exten => s,100,Set(H323CHANINFO(callid)=${OSPOUTCALLID})
; Set OSP token
exten => s,n,Set(H323CHANINFO(osptoken)=${OSPOUTTOKEN})
exten => s,n,GoTo(1000)
; IAX ----------------------------------------------------------
; Set OSP token
exten => s,200,Set(IAXCHANINFO(osptoken)=${OSPOUTTOKEN})
exten => s,n,GoTo(1000)
; SIP ----------------------------------------------------------
exten => s,300,GoTo(1000)
; --------------------------------------------------------------
exten => s,1000,MacroExit
3.1.4 zapata/sip/iax/h323/ooh323.conf
There is no configuration required for OSP.
3.1 OSP Support Implementation 3.2 OSP Dial Plan Functions
In Asterisk, all OSP support is implemented as dial plan functions. This section provides a description of each OSP dial plan function.
3.1.1 OSPAuth 3.2.1 OSPAuth
OSP token validation function. OSP token validation function.
Input: Input:
* OSPPEERIP: last hop IP address * OSPPEERIP: last hop IP address
* OSPINTOKEN: inbound OSP token * OSPINTOKEN: inbound OSP token
* provider: OSP service provider configured in osp.conf. If it is empty, * provider: OSP service provider configured in osp.conf. If it is empty, default provider is used.
default provider is used.
* priority jump * priority jump
Output: Output:
* OSPINHANDLE: inbound OSP transaction handle * OSPINHANDLE: inbound OSP transaction handle
* OSPINTIMELIMIT: inbound call duration limit * OSPINTIMELIMIT: inbound call duration limit
* OSPAUTHSTATUS: OSPAuth return value. SUCCESS/FAILED/ERROR * OSPAUTHSTATUS: OSPAuth return value. SUCCESS/FAILED/ERROR
3.1.2 OSPLookup 3.2.2 OSPLookup
OSP lookup function. OSP lookup function.
Input: Input:
* OSPPEERIP: last hop IP address * OSPPEERIP: last hop IP address
* OSPINHANDLE: inbound OSP transaction handle * OSPINHANDLE: inbound OSP transaction handle
* OSPINTIMELIMIT: inbound call duration limit * OSPINTIMELIMIT: inbound call duration limit
* exten: called number * exten: called number
* provider: OSP service provider configured in osp.conf. If it is empty, * provider: OSP service provider configured in osp.conf. If it is empty, default provider is used.
default provider is used.
* priority jump * priority jump
* callidtypes: Generate call ID for the outbound call. h: H.323; s: SIP; i: IAX. Only h, H.323, has been implemented.
Output: Output:
* OSPOUTHANDLE: outbound transaction handle * OSPOUTHANDLE: outbound transaction handle
* OSPTECH: outbound protocol * OSPTECH: outbound protocol
* OSPDEST: outbound destination * OSPDEST: outbound destination IP address
* OSPCALLED: outbound called nummber
* OSPCALLING: outbound calling number * OSPCALLING: outbound calling number
* OSPOUTTOKEN: outbound OSP token * OSPOUTTOKEN: outbound OSP token
* OSPRESULTS: number of remain destinations * OSPRESULTS: number of remaining destinations
* OSPOUTTIMELIMIT: outbound call duration limit * OSPOUTTIMELIMIT: outbound call duration limit
* OSPOUTCALLIDTYPES: same as input callidtypes
* OSPOUTCALLID: outbound call ID. Only for H.323
* OSPDIALSTR: outbound dial string
* OSPLOOKUPSTATUS: OSPLookup return value. SUCCESS/FAILED/ERROR * OSPLOOKUPSTATUS: OSPLookup return value. SUCCESS/FAILED/ERROR
3.1.3 OSPNext 3.2.3 OSPNext
OSP lookup next function. OSP lookup next function.
Input: Input:
* OSPINHANDLE: inbound transaction handle * OSPINHANDLE: inbound transaction handle
* OSPOUTHANDLE: outbound transaction handle * OSPOUTHANDLE: outbound transaction handle
* OSPINTIMELIMIT: inbound call duration limit * OSPINTIMELIMIT: inbound call duration limit
* OSPOUTCALLIDTYPES: types of call ID generated by Asterisk.
* OSPRESULTS: number of remain destinations * OSPRESULTS: number of remain destinations
* cause: last destination disconnect cause * cause: last destination disconnect cause
* priority jump * priority jump
Output: Output:
* OSPTECH: outbound protocol * OSPTECH: outbound protocol
* OSPDEST: outbound destination * OSPDEST: outbound destination IP address
* OSPCALLED: outbound called number
* OSPCALLING: outbound calling number * OSPCALLING: outbound calling number
* OSPOUTTOKEN: outbound OSP token * OSPOUTTOKEN: outbound OSP token
* OSPRESULTS: number of remain destinations * OSPRESULTS: number of remain destinations
* OSPOUTTIMELIMIT: outbound call duration limit * OSPOUTTIMELIMIT: outbound call duration limit
* OSPOUTCALLID: outbound call ID. Only for H.323
* OSPDIALSTR: outbound dial string
* OSPNEXTSTATUS: OSPLookup return value. SUCCESS/FAILED/ERROR * OSPNEXTSTATUS: OSPLookup return value. SUCCESS/FAILED/ERROR
3.1.4 OSPFinish 3.2.4 OSPFinish
OSP report usage function. OSP report usage function.
Input: Input:
* OSPINHANDLE: inbound transaction handle * OSPINHANDLE: inbound transaction handle
@ -288,176 +572,233 @@ TransNexus and OSP Secured are trademarks of TransNexus, Inc.
Output: Output:
* OSPFINISHSTATUS: OSPLookup return value. SUCCESS/FAILED/ERROR * OSPFINISHSTATUS: OSPLookup return value. SUCCESS/FAILED/ERROR
3.2 Build with OSP Support 3.3 extensions.conf Examples
If the OSP Toolkit is installed in the default install directory, /usr/local, The extensions.conf file example provided in Section 3.1 is designed to
no additional configuration is required. If the OSP Toolkit is installed in handle all OSP call scenarios when Asterisk is used as a source or destination
another directory, say /myosp, Asterisk must be configured with the location gateway to the PSTN or as a proxy between VoIP networks. The extenstion.conf
of the OSP Toolkit. examples in this section are designed for specific use cases only.
--with-osptk=/myosp
Note: Please change the install path only if you familiar with both the OSP
Toolkit and the Asterisk. Otherwise, the change may results Asterisk not
supporting the OSP protocol.
Now, you can compile Asterisk according to the instructions provided with the
Asterisk distribution.
3.3 Configure with OSP Support
3.3.1 osp.conf 3.3.1 Source Gateway
; The examples in this section apply when the Asterisk server is being used as
; Open Settlement Protocol Sample Configuration File a TDM to VoIP gateway. Calls originate on the TDM network and are converted
; to VoIP by Asterisk. In these cases, the Asterisk server queries an OSP
; This file contains configuration of providers that server to find a route to a VoIP destination. When the call ends, Asterisk
; are used by the OSP subsystem of Asterisk. The section sends a CDR to the OSP server.
; "general" is reserved for global options. Each other For SIP protocol.
; section declares an OSP Provider. The provider "default" [SIPSrcGW]
; is used when no provider is otherwise specified. exten => _XXXX.,1,NoOp(SIPSrcGW)
; ; Set calling number if necessary
[general] exten => _XXXX.,n,Set(CALLERID(numner)=CallingNumber)
; ; OSP lookup using default provider, if fail/error jump to lookup+101
; Should hardware acceleration be enabled? May not be changed exten => _XXXX.,n(lookup),OSPLookup(${EXTEN}||j)
; on a reload. ; Set calling number which may be translated
; exten => _XXXX.,n,Set(CALLERID(number)=${OSPCALLING})
accelerate=no ; Dial to destination, 60 timeout, with call duration limit
; exten => _XXXX.,n,Dial(${OSPDIALSTR},60,oL($[${OSPOUTTIMELIMIT}*1000]))
; Defines the token format that Asterisk can validate. ; Wait 3 seconds
; 0 - signed tokens only exten => _XXXX.,n,Wait,3
; 1 - unsigned tokens only ; Hangup
; 2 - both signed and unsigned exten => _XXXX.,n,Hangup
; The defaults to 0, i.e. the Asterisk can validate signed tokens only. ; Deal with OSPLookup fail/error
; exten => _XXXX.,lookup+101,Hangup
tokenformat=0 exten => h,1,NoOp()
; ; OSP report usage
[default] exten => h,n,OSPFinish(${HANGUPCAUSE})
; For IAX protocol.
; All paths are presumed to be under /var/lib/asterisk/keys unless [IAXSrcGW]
; the path begins with '/' exten => _XXXX.,1,NoOp(IAXSrcGW)
; ; Set calling number if necessary
; Specify the private keyfile. If unspecified, defaults to the name exten => _XXXX.,n,Set(CALLERID(numner)=CallingNumber)
; of the section followed by "-privatekey.pem" (e.g. default-privatekey.pem) ; OSP lookup using default provider, if fail/error jump to lookup+101
; exten => _XXXX.,n(lookup),OSPLookup(${EXTEN}||j)
privatekey=pkey.pem ; Set outbound OSP token
; exten => _XXXX.,n,Set(IAXCHANINFO(osptoken)=${OSPOUTTOKEN})
; Specify the local certificate file. If unspecified, defaults to ; Set calling number which may be translated
; the name of the section followed by "-localcert.pem" exten => _XXXX.,n,Set(CALLERID(number)=${OSPCALLING})
; ; Dial to destination, 60 timeout, with call duration limit
localcert=localcert.pem exten => _XXXX.,n,Dial(${OSPDIALSTR},60,oL($[${OSPOUTTIMELIMIT}*1000]))
; ; Wait 3 seconds
; Specify one or more Certificate Authority keys. If none are listed, exten => _XXXX.,n,Wait,3
; a single one is added with the name "-cacert.pem" ; Hangup
; exten => _XXXX.,n,Hangup
cacert=cacert_0.pem ; Deal with OSPLookup fail/error
; exten => _XXXX.,lookup+101,Hangup
; Specific parameters can be tuned as well: exten => h,1,NoOp()
; ; OSP report usage
; maxconnections: Max number of simultaneous connections to the provider (default=20) exten => h,n,OSPFinish(${HANGUPCAUSE})
; retrydelay: Extra delay between retries (default=0) For H.323 protocol.
; retrylimit: Max number of retries before giving up (default=2) [H323SrcGW]
; timeout: Timeout for response in milliseconds (default=500) exten => _XXXX.,1,NoOp(H323SrcGW)
;
maxconnections=20
retrydelay=0
retrylimit=2
timeout=500
;
; List all service points for this provider
;
;servicepoint=http://osptestserver.transnexus.com:1080/osp
servicepoint=http://OSP server IP:1080/osp
;
; Set the "source" for requesting authorization
;
;source=foo
source=[host IP]
;
; Set the authentication policy.
; 0 - NO
; 1 - YES
; 2 - EXCLUSIVE
; Default is 1, validate token but allow no token.
;
authpolicy=1
3.3.2 zapata/sip/iax.conf
There is no configuration required for OSP.
3.3.3 extensions.conf
An Asterisk box can be configured as OSP source/destination gateway or OSP proxy.
3.3.3.1 OSP Source Gateway
[PhoneSrcGW]
; Set calling number if necessary ; Set calling number if necessary
exten => _XXXX.,1,Set(CALLERID(numner)=CallingNumber) exten => _XXXX.,n,Set(CALLERID(numner)=CallingNumber)
; OSP lookup using default provider, if fail/error jump to 2+101 ; OSP lookup using default provider, if fail/error jump to lookup+101
exten => _XXXX.,2,OSPLookup(${EXTEN}||j) ; "h" parameter is used to generate a call id
; Cisco OSP gateways use this call id to validate OSP token
exten => _XXXX.,n(lookup),OSPLookup(${EXTEN}||jh)
; Set outbound call id
exten => _XXXX.,n,Set(OH323CHANINFO(callid)=${OSPOUTCALLID})
; Set outbound OSP token
exten => _XXXX.,n,Set(OH323CHANINFO(osptoken)=${OSPOUTTOKEN})
; Set calling number which may be translated ; Set calling number which may be translated
exten => _XXXX.,3,Set(CALLERID(number)=${OSPCALLING}) exten => _XXXX.,n,Set(CALLERID(number)=${OSPCALLING})
; Dial to destination, 60 timeout, with call duration limit ; Dial to destination, 60 timeout, with call duration limit
exten => _XXXX.,4,Dial(${OSPTECH}/${OSPDEST},60,oL($[${OSPOUTTIMELIMIT}*1000])) exten => _XXXX.,n,Dial(${OSPDIALSTR},60,oL($[${OSPOUTTIMELIMIT}*1000]))
; Wait 3 seconds ; Wait 3 seconds
exten => _XXXX.,5,Wait,3 exten => _XXXX.,n,Wait,3
; Hangup ; Hangup
exten => _XXXX.,6,Hangup exten => _XXXX.,n,Hangup
; Deal with OSPLookup fail/error ; Deal with OSPLookup fail/error
exten => _XXXX.,2+101,Hangup exten => _XXXX.,lookup+101,Hangup
exten => h,1,NoOp()
; OSP report usage ; OSP report usage
exten => h,1,OSPFinish(${HANGUPCAUSE}) exten => h,n,OSPFinish(${HANGUPCAUSE})
3.3.3.2 OSP Destination Gateway
[PhoneDstGW] 3.3.2 Destination Gateway
The examples in this section apply when Asterisk is being used as a VoIP to
TDM gateway. VoIP calls are received by Asterisk which validates the OSP
peering token and completes to the TDM network. After the call ends,
Asterisk sends a CDR to the OSP server.
For SIP protocol
[SIPDstGW]
exten => _XXXX.,1,NoOp(SIPDstGW)
; Get peer IP ; Get peer IP
exten => _XXXX.,1,Set(OSPPEERIP=${SIPCHANINFO(peerip)}) exten => _XXXX.,n,Set(OSPPEERIP=${SIPCHANINFO(peerip)})
; Get OSP token ; Get OSP token
exten => _XXXX.,2,Set(OSPINTOKEN=${SIP_HEADER(P-OSP-Auth-Token)}) exten => _XXXX.,n,Set(OSPINTOKEN=${SIP_HEADER(P-OSP-Auth-Token)})
; Validate token using default provider, if fail/error jump to 3+101 ; Validate token using default provider, if fail/error jump to auth+101
exten => _XXXX.,3,OSPAuth(|j) exten => _XXXX.,n(auth),OSPAuth(|j)
; Ringing ; Ringing
exten => _XXXX.,4,Ringing exten => _XXXX.,n,Ringing
; Wait 1 second ; Wait 1 second
exten => _XXXX.,5,Wait,1 exten => _XXXX.,n,Wait,1
; Dial phone, timeout 15 seconds, with call duration limit ; Dial phone, timeout 15 seconds, with call duration limit
exten => _XXXX.,6,Dial(${DIALOUTANALOG}/${EXTEN:1},15,oL($[${OSPINTIMELIMIT}*1000])) exten => _XXXX.,n,Dial(${DIALOUTANALOG}/${EXTEN:1},15,oL($[${OSPINTIMELIMIT}*1000]))
; Wait 3 seconds ; Wait 3 seconds
exten => _XXXX.,7,Wait,3 exten => _XXXX.,n,Wait,3
; Hangup ; Hangup
exten => _XXXX.,8,Hangup exten => _XXXX.,n,Hangup
; Deal with OSPAuth fail/error ; Deal with OSPAuth fail/error
exten => _XXXX.,3+101,Hangup exten => _XXXX.,auth+101,Hangup
exten => h,1,NoOp()
; OSP report usage ; OSP report usage
exten => h,1,OSPFinish(${HANGUPCAUSE}) exten => h,n,OSPFinish(${HANGUPCAUSE})
3.3.3.3 Proxy For IAX protocol
[GeneralProxy] [IAXDstGW]
exten => _XXXX.,1,NoOp(IAXDstGW)
; Get peer IP
exten => _XXXX.,n,Set(OSPPEERIP=${IAXPEER(CURRENTCHANNEL)})
; Get OSP token
exten => _XXXX.,n,Set(OSPINTOKEN=${IAXCHANINFO(osptoken)})
; Validate token using default provider, if fail/error jump to auth+101
exten => _XXXX.,n(auth),OSPAuth(|j)
; Ringing
exten => _XXXX.,n,Ringing
; Wait 1 second
exten => _XXXX.,n,Wait,1
; Dial phone, timeout 15 seconds, with call duration limit
exten => _XXXX.,n,Dial(${DIALOUTANALOG}/${EXTEN:1},15,oL($[${OSPINTIMELIMIT}*1000]))
; Wait 3 seconds
exten => _XXXX.,n,Wait,3
; Hangup
exten => _XXXX.,n,Hangup
; Deal with OSPAuth fail/error
exten => _XXXX.,auth+101,Hangup
exten => h,1,NoOp()
; OSP report usage
exten => h,n,OSPFinish(${HANGUPCAUSE})
For H.323 protocol
[H323DstGW]
exten => _XXXX.,1,NoOp(H323DstGW)
; Get peer IP ; Get peer IP
exten => _XXXX.,1,Set(OSPPEERIP=${SIPCHANINFO(peerip)}) exten => _XXXX.,n,Set(OSPPEERIP=${H323CHANINFO(peerip)})
; Get OSP token ; Get OSP token
exten => _XXXX.,2,Set(OSPINTOKEN=${SIP_HEADER(P-OSP-Auth-Token)}) exten => _XXXX.,n,Set(OSPINTOKEN=${H323CHANINFO(osptoken)})
; Validate token using default provider, if fail/error jump to 3+101 ; Validate token using default provider, if fail/error jump to auth+101
exten => _XXXX.,3,OSPAuth(|j) exten => _XXXX.,n(auth),OSPAuth(|j)
; OSP lookup using default provider, if fail/error jump to 4+101 ; Ringing
exten => _XXXX.,4,OSPLookup(${EXTEN}||j) exten => _XXXX.,n,Ringing
; Wait 1 second
exten => _XXXX.,n,Wait,1
; Dial phone, timeout 15 seconds, with call duration limit
exten => _XXXX.,n,Dial(${DIALOUTANALOG}/${EXTEN:1},15,oL($[${OSPINTIMELIMIT}*1000]))
; Wait 3 seconds
exten => _XXXX.,n,Wait,3
; Hangup
exten => _XXXX.,n,Hangup
; Deal with OSPAuth fail/error
exten => _XXXX.,auth+101,Hangup
exten => h,1,NoOp()
; OSP report usage
exten => h,n,OSPFinish(${HANGUPCAUSE})
3.3.3 Proxy
The example in this section applies when Asterisk is a proxy between two VoIP networks.
[GeneralProxy]
exten => _XXXX.,1,NoOp(GeneralProxy)
; Get peer IP and inbound OSP token
; SIP, un-comment the following two lines.
;exten => _XXXX.,n,Set(OSPPEERIP=${SIPCHANINFO(peerip)})
;exten => _XXXX.,n,Set(OSPINTOKEN=${SIP_HEADER(P-OSP-Auth-Token)})
; IAX, un-comment the following 2 lines
;exten => _XXXX.,n,Set(OSPPEERIP=${IAXPEER(CURRENTCHANNEL)})
;exten => _XXXX.,n,Set(OSPINTOKEN=${IAXCHANINFO(osptoken)})
; H323, un-comment the following two lines.
;exten => _XXXX.,n,Set(OSPPEERIP=${OH323CHANINFO(peerip)})
;exten => _XXXX.,n,Set(OSPINTOKEN=${OH323CHANINFO(osptoken)})
;---------------------------------------------------------------
; Validate token using default provider, if fail/error jump to auth+101
exten => _XXXX.,n(auth),OSPAuth(|j)
; OSP lookup using default provider, if fail/error jump to lookup+101
; "h" parameter is used to generate a call id for H.323 destinations
; Cisco OSP gateways use this call id to validate OSP token
exten => _XXXX.,n(lookup),OSPLookup(${EXTEN}||jh)
; Set outbound call id and OSP token
; IAX, un-comment the following line.
;exten => _XXXX.,n,Set(IAXCHANINFO(osptoken)=${OSPOUTTOKEN})
; H323, un-comment the following two lines.
;exten => _XXXX.,n,Set(OH323CHANINFO(callid)=${OSPOUTCALLID})
;exten => _XXXX.,n,Set(OH323CHANINFO(osptoken)=${OSPOUTTOKEN})
;---------------------------------------------------------------
; Set calling number which may be translated ; Set calling number which may be translated
exten => _XXXX.,5,Set(CALLERID(number)=${OSPCALLING}) exten => _XXXX.,n,Set(CALLERID(number)=${OSPCALLING})
; Dial to 1st destination, 60 timeout, with call duration limit ; Dial to destination, 14 timeout, with call duration limit
exten => _XXXX.,6,Dial(${OSPTECH}/${OSPDEST},24,oL($[${OSPOUTTIMELIMIT}*1000])) exten => _XXXX.,n,Dial(${OSPDIALSTR},14,oL($[${OSPOUTTIMELIMIT}*1000]))
; OSP lookup next, if fail/error jump to 7+101 ; OSP lookup next destination using default provider, if fail/error jump to next1+101
exten => _XXXX.,7,OSPNext(${HANGUPCAUSE}||j) exten => _XXXX.,n(next1),OSPNext(${HANGUPCAUSE}||j)
; Set outbound call id and OSP token
; IAX, un-comment the following line.
;exten => _XXXX.,n,Set(IAXCHANINFO(osptoken)=${OSPOUTTOKEN})
; H323, un-comment the following two lines.
;exten => _XXXX.,n,Set(OH323CHANINFO(callid)=${OSPOUTCALLID})
;exten => _XXXX.,n,Set(OH323CHANINFO(osptoken)=${OSPOUTTOKEN})
;---------------------------------------------------------------
; Set calling number which may be translated ; Set calling number which may be translated
exten => _XXXX.,8,Set(CALLERID(number)=${OSPCALLING}) exten => _XXXX.,n,Set(CALLERID(number)=${OSPCALLING})
; Dial to 2nd destination, 60 timeout, with call duration limit ; Dial to destination, 15 timeout, with call duration limit
exten => _XXXX.,9,Dial(${OSPTECH}/${OSPDEST},25,oL($[${OSPOUTTIMELIMIT}*1000])) exten => _XXXX.,n,Dial(${OSPDIALSTR},15,oL($[${OSPOUTTIMELIMIT}*1000]))
; OSP lookup next, if fail/error jump to 10+101 ; OSP lookup next destination using default provider, if fail/error jump to next2+101
exten => _XXXX.,10,OSPNext(${HANGUPCAUSE}||j) exten => _XXXX.,n(next2),OSPNext(${HANGUPCAUSE}||j)
; Set outbound call id and OSP token
; IAX, un-comment the following line.
;exten => _XXXX.,n,Set(IAXCHANINFO(osptoken)=${OSPOUTTOKEN})
; H323, un-comment the following two lines.
;exten => _XXXX.,n,Set(OH323CHANINFO(callid)=${OSPOUTCALLID})
;exten => _XXXX.,n,Set(OH323CHANINFO(osptoken)=${OSPOUTTOKEN})
;---------------------------------------------------------------
; Set calling number which may be translated ; Set calling number which may be translated
exten => _XXXX.,11,Set(CALLERID(number)=${OSPCALLING}) exten => _XXXX.,n,Set(CALLERID(number)=${OSPCALLING})
; Dial to 3rd destination, 60 timeout, with call duration limit ; Dial to destination, 16 timeout, with call duration limit
exten => _XXXX.,12,Dial(${OSPTECH}/${OSPDEST},26,oL($[${OSPOUTTIMELIMIT}*1000])) exten => _XXXX.,n,Dial(${OSPDIALSTR},16,oL($[${OSPOUTTIMELIMIT}*1000]))
; Hangup ; Hangup
exten => _XXXX.,13,Hangup exten => _XXXX.,n,Hangup
; Deal with OSPAuth fail/error ; Deal with OSPAuth fail/error
exten => _XXXX.,3+101,Hangup exten => _XXXX.,auth+101,Hangup
; Deal with OSPLookup fail/error ; Deal with OSPLookup fail/error
exten => _XXXX.,4+101,Hangup exten => _XXXX.,lookup+101,Hangup
; Deal with 1st OSPNext fail/error ; Deal with 1st OSPNext fail/error
exten => _XXXX.,7+101,Hangup exten => _XXXX.,next1+101,Hangup
; Deal with 2nd OSPNext fail/error ; Deal with 2nd OSPNext fail/error
exten => _XXXX.,10+101,Hangup exten => _XXXX.,next2+101,Hangup
exten => h,1,NoOp()
; OSP report usage ; OSP report usage
exten => h,1,OSPFinish(${HANGUPCAUSE}) exten => h,n,OSPFinish(${HANGUPCAUSE})

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