Cmterm7975sip942sr4zip Upd -

Denotes the Session Initiation Protocol. This firmware is for phones running SIP rather than Cisco’s proprietary SCCP (Skinny) protocol. 9-4-2: The major and minor version numbers. SR4: Stands for Service Release 4 .

, ready for another decade of dial tones and conference calls. cmterm7975sip942sr4zip upd

Once the phone boots into SIP mode, you will need an XML configuration file on your TFTP server to register it with your VoIP provider. Denotes the Session Initiation Protocol