Aug 27, 2020 #1 deGoyan Technical User Aug 27, 2020 1 RU HI! Sorry for my English. I have several phones Aastra 4425 ip, and Asterisk. Can this phones work with SIP protocol?
HI! Sorry for my English. I have several phones Aastra 4425 ip, and Asterisk. Can this phones work with SIP protocol?
Sep 8, 2020 #2 EricDan Technical User Apr 24, 2017 10 ES Hi, only the version 2 of this phones can use SIP protocol. Good Luck. Upvote 0 Downvote