Hi, all. Is anybody managed call from Cisco CP-9971 to Asterisk (12.8.0)? We have that ip phone and call ends with error in log ‘Received SIP INVITE with unsupported required extension: required: unsupported:sdp-anat’. How to enable sdp-anat in Asterisk? And there should be some option in xml co…

Asterisk, Cisco CP-9971, sdp-anat

royj August 29, 2016, 9:57am 3

Thanks for the answer

Topic		Replies	Views
Cisco 6901 Asterisk Support	2	326	October 8, 2013
Asterisk and Cisco 9951 Asterisk Support	1	656	August 9, 2013
Asterisk & Cisco Callmanager HELP! Asterisk Support	2	199	November 19, 2008
Cisco SIP Phone CP-9951 Asterisk SIP	2	755	October 29, 2023
Cisco Unified IP Phone 6901 with Asterisk Asterisk Support	4	1164	October 8, 2013