The 8.5.4 zipl remains the most widely archived and community-tested version for mixed-vendor SIP PBXs (Asterisk, FreeSWITCH, 3CX).
| Version | Release Date | Key Feature | Stability | |---------|--------------|-------------|-----------| | 8.4.1 | 2010 | First SIP release | Buggy | | 8.5.2 | 2012 | Improved NAT | Moderate | | | 2013 | Production-stable | High | | 8.5.5 | 2014 | Minor security fixes | High | | 9.0.1 | 2015 (beta) | Unstable; pulled by Cisco | Low | cmterm 7941 7961 sip 8 5 4 zipl
Overall, the CMTerm 7941 and 7961 SIP phones are a great choice for businesses looking to improve their communication capabilities and provide their employees with a reliable and advanced phone system." cmterm 7941 7961 sip 8 5 4 zipl
Configured with Option 150 or Option 66 to point the phone to your TFTP server's IP address. cmterm 7941 7961 sip 8 5 4 zipl