The file is a firmware upgrade package for Cisco Unified IP Phone Go to product viewer dialog for this item.
| Feature | Status | |---------|--------| | CUCM 10.x, 11.x, 12.x, 14.x | 鉁� Supported | | Third-party SIP proxies (Asterisk, FreeSWITCH, Metaswitch) | 鉁� Basic SIP support works, but no vendor validation | | Video (via 7975G鈥檚 optional camera) | 鉂� Not supported in SIP mode 鈥� SCCP only | | Cisco Extension Mobility | 鉂� Not supported in SIP | | Headset (EHS with Cisco headsets) | 鉁� Supported | cmterm7975sip942sr4zip 2021