@ -18,7 +18,10 @@ The SLA implementation can automatically generate the dialplan necessary for
basic operation if the "autocontext" option is set for trunks and stations in
sla.conf. However, for reference, here is an automatically generated dialplan
to help with custom building of the dialplan to include other features, such as
voicemail:
voicemail.
However, note that there is a little bit of additional configuration needed if
the trunk is an IP channel. This is discussed in the TRUNKS section.
[line1]
exten => s,1,SLATrunk(line1)
@ -49,14 +52,52 @@ exten => station3_line2,1,SLAStation(station3_line2)
-------------------------------------------------------------------------------
TRUNKS
For the trunk side of SLA, the only channels that are currently supported are
Zap channels. Support for IP trunks is planned, but not yet implemented.
Be sure to configure the trunk's context to be the same one that is set for the
"autocontext" option in sla.conf if automatic dialplan configuration is used.
This would be done in the regular device entry in zapata.conf, sip.conf, etc.
Note that the automatic dialplan generation creates the SLATrunk() extension
at extension 's'. This is perfect for Zap channels that are FXO trunks, for
example. However, it may not be good enough for an IP trunk, since the call
coming in over the trunk may specify an actual number.
If the dialplan is being built manually, ensure that calls coming in on a trunk
execute the SLATrunk() application with an argument of the trunk name.
execute the SLATrunk() application with an argument of the trunk name, as shown
in the dialplan example before.
IP trunks can be used, but they require some additional configuration to work.
For this example, let's say we have a SIP trunk called "mytrunk" that is going
to be used as line4. Furthermore, when calls come in on this trunk, they are
going to say that they are calling the number "12564286000". Also, let's say
that the numbers that are valid for calling out this trunk are NANP numbers,
of the form _1NXXNXXXXXX.
In sip.conf, there would be an entry for [mytrunk]. For [mytrunk],
set context=line4.
sla.conf:
[line4]
type=trunk
device=Local/disa@line4_outbound
extensions.conf:
[line4]
exten => 12564286000,1,SLATrunk(line4)
[line4_outbound]
exten => disa,1,Disa(no-password|line4_outbound)
exten => _1NXXNXXXXXX,1,Dial(SIP/${EXTEN}@mytrunk)
So, when a station picks up their phone and connects to line 4, they are
connected to the local dialplan. The Disa application plays dialtone to the
phone and collects digits until it matches an extension. In this case, once
the phone dials a number like 12565551212, the call will proceed out the
SIP trunk.
-------------------------------------------------------------------------------
@ -91,3 +132,94 @@ a SIP phone for use with SLA:
is taken off hook, then the phone should be automatically configured to
dial "station1" when it is taken off hook.
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
VOICEMAIL
This is an example of how you could set up a single voicemail box for the
phone system. The voicemail box number used in this example is 1234, which
would be configured in voicemail.conf.
For this example, assume that there are 2 trunks and 3 stations. The trunks
are Zap/1 and Zap/2. The stations are SIP/station1, SIP/station2, and
SIP/station3.
In zapata.conf, channel 1 has context=line1 and channel 2 has context=line2.
In sip.conf, all three stations are configured with context=sla_stations.
When the stations pick up their phones to dial, they are allowed to dial
NANP numbers for outbound calls, or 8500 for checking voicemail.
sla.conf:
[line1]
type=trunk
device=Local/disa@line1_outbound
[line2]
type=trunk
device=Local/disa@line2_outbound
[station](!)
type=station
trunk=line1
trunk=line2
[station1](station)
device=SIP/station1
[station2](station)
device=SIP/station2
[station3](station)
device=SIP/station3
extensions.conf:
[macro-slaline]
exten => s,1,SLATrunk(${ARG1})
exten => s,n,Goto(s-${SLATRUNK_STATUS}|1)
exten => s-FAILURE,1,Voicemail(1234|u)
exten => s-UNANSWERED,1,Voicemail(1234|u)
[line1]
exten => s,1,Macro(slaline|line1)
[line2]
exten => s,2,Macro(slaline|line2)
[line1_outbound]
exten => disa,1,Disa(no-password|line1_outbound)
exten => _1NXXNXXXXXX,1,Dial(Zap/1/${EXTEN})
exten => 8500,1,VoicemailMain(1234)
[line2_outbound]
exten => disa,1,Disa(no-password|line2_outbound)
exten => _1NXXNXXXXXX,1,Dial(Zap/2/${EXTEN})
exten => 8500,1,VoicemailMain(1234)
[sla_stations]
exten => station1,1,SLAStation(station1)
exten => station1_line1,hint,SLA:station1_line1
exten => station1_line1,1,SLAStation(station1_line1)
exten => station1_line2,hint,SLA:station1_line2
exten => station1_line2,1,SLAStation(station1_line2)
exten => station2,1,SLAStation(station2)
exten => station2_line1,hint,SLA:station2_line1
exten => station2_line1,1,SLAStation(station2_line1)
exten => station2_line2,hint,SLA:station2_line2
exten => station2_line2,1,SLAStation(station2_line2)
exten => station3,1,SLAStation(station3)
exten => station3_line1,hint,SLA:station3_line1
exten => station3_line1,1,SLAStation(station3_line1)
exten => station3_line2,hint,SLA:station3_line2
exten => station3_line2,1,SLAStation(station3_line2)
-------------------------------------------------------------------------------
Russell Bryant
19 years ago