asterisk: Update copyright.

ASTERISK-29326

Change-Id: Ia95dbfb66e2d11ac4d1228444283bb2e4d77396a

README.md

@@ -1,7 +1,7 @@
 # The Asterisk(R) Open Source PBX
 ```text
         By Mark Spencer <markster@digium.com> and the Asterisk.org developer community.
-        Copyright (C) 2001-2019 Digium, Inc. and other copyright holders.
+        Copyright (C) 2001-2021 Sangoma Technologies Corporation and other copyright holders.
 ```
 ## SECURITY
 
@@ -47,7 +47,7 @@ and the BSD variants.
 ANY special hardware, not even a sound card) to install and run Asterisk.
 
 Supported telephony hardware includes:
-* All Analog and Digital Interface cards from [Digium]
+* All Analog and Digital Interface cards from [Sangoma]
 * QuickNet Internet PhoneJack and LineJack (http://www.quicknet.net)
 * any full duplex sound card supported by ALSA, OSS, or PortAudio
 * any ISDN card supported by mISDN on Linux
@@ -251,7 +251,7 @@ Welcome to the growing worldwide community of Asterisk users!
 
 ---
 
-Asterisk is a trademark of Digium, Inc.
+Asterisk is a trademark of Sangoma Technologies Corporation
 
 [home page]: https://www.asterisk.org
 [support]: https://www.asterisk.org/support
@@ -261,7 +261,7 @@ Asterisk is a trademark of Digium, Inc.
 [voip-info.org]: http://www.voip-info.org/wiki-Asterisk
 [asteriskdocs.org]: http://www.asteriskdocs.org
 [NTP]: http://www.ntp.org/
-[Digium]: https://www.digium.com/
+[Sangoma]: https://www.sangoma.com/
 [UPGRADE.txt]: UPGRADE.txt
 [CHANGES]: CHANGES
 [configs]: configs

main/asterisk.c

@@ -53,9 +53,9 @@
  *
  * \section copyright Copyright and Author
  *
- * Copyright (C) 1999 - 2018, Digium, Inc.
- * Asterisk is a <a href="http://www.digium.com/en/company/view-policy.php?id=Trademark-Policy">registered trademark</a>
- * of <a rel="nofollow" href="http://www.digium.com">Digium, Inc</a>.
+ * Copyright (C) 1999 - 2021, Sangoma Technologies Corporation.
+ * Asterisk is a <a href="https://cdn.sangoma.com/wp-content/uploads/Sangoma-Trademark-Policy.pdf">registered trademark</a>
+ * of <a rel="nofollow" href="http://www.sangoma.com">Sangoma Technologies Corporation</a>.
  *
  * \author Mark Spencer <markster@digium.com>
  *
@@ -297,7 +297,7 @@ int daemon(int, int);  /* defined in libresolv of all places */
 #define NUM_MSGS 64
 
 /*! Displayed copyright tag */
-#define COPYRIGHT_TAG "Copyright (C) 1999 - 2018, Digium, Inc. and others."
+#define COPYRIGHT_TAG "Copyright (C) 1999 - 2021, Sangoma Technologies Corporation and others."
 
 /*! \brief Welcome message when starting a CLI interface */
 #define WELCOME_MESSAGE \