# 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
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
---
-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
[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
*
* \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>
*
#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 \