> My telephone extensions on asterisk which itself is connected to the > Bell line using SPA-3000, ring only after third ring from the caller. > Why is this happening and what is the solution?
First, the ringback tone that a caller receives is not in sync with the actual phone line ringing. In some cases, the ringback tone is "almost" (but not quit) one ring cycle prior to the actual phone line ringing. Second, in the US the spa3k itself needs wait for the callerid to complete _before_ it sends anything to asterisk. Callerid happens between the first and second ring as others have already noted. Depending on the ringback tone sync noted above and waiting for the callerid, that elapsed time can approach what would be considered the third ring. (You can watch asterisk's CLI for the incoming call and judge the delay incurred within the spa3k.) Once asterisk receives the sip exchange from the spa3k, asterisk runs through your dialplan, and sends an appropriate sip packet to your sip phones to cause it to ring. There could be some delay in the phone actually ringing, and that delay will be 99% the result of how the sip phone manufacturer handles the "ring" packet. Watching the CLI and listening for the ring will provide some level of indication as to how much delay is associated with it. You might also trying experimenting with some of the spa3k parameters. If I recall correctly, there is a configurable parameter associated with how many rings have to occur before the spa3k forwards the sip packets to asterisk. Its been a while since I've messed with the spa3k so not sure where its located in their menues. As others have already mentioned, if you don't use/have callerid on your pstn line, then disable callerid to expedite the call progress. _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
