SIP to SIP connection This topic has 0 replies, 1 voice, and was last updated 22 years, 5 months ago by Keith. Viewing 1 post (of 1 total) Author Posts 31st July 2002 at 09:31 #21912 KeithGuest How would one go about to establish a SIP to SIP connection between 2 separate network using Cisco ATA 168 telephone adapter? Author Posts Viewing 1 post (of 1 total) The forum ‘Voice over IP’ is closed to new topics and replies.