Hello everyone, I have some problems to enable push the Zoiper Windows Phone in my Asterisk 11. Below is the result of CLI == Using SIP RTP CoS mark 5 -- Executing [1033 at ramais:1] Answer("SIP/1030-00000201", "") in new stack > 0x7efc90024190 -- Probation passed - setting RTP source address to 179.XX.XXX.XX:57741 [Feb 29 12:32:28] NOTICE[4348][C-000001ce]: res_rtp_asterisk.c:4441 ast_rtp_read: Unknown RTP codec 95 received from '179.XX.XX.XX:57741' > 0x7efc90024190 -- Probation passed - setting RTP source address to 179.XX.XX.XX:57741 -- Executing [1033 at ramais:2] Set("SIP/1030-00000201", "location=") in new stack -- Executing [1033 at ramais:3] Verbose("SIP/1030-00000201", "0, getting push info ") in new stack getting push info -- Executing [1033 at ramais:4] Set("SIP/1030-00000201", "regx="X-PUSH-URI=([0-9a-zA-Z\.\:\/\_]+)"") in new stack -- Executing [1033 at ramais:5] Set("SIP/1030-00000201", "push=") in new stack -- Executing [1033 at ramais:6] System("SIP/1030-00000201", "/usr/bin/push.sh ") in new stack -- Executing [1033 at ramais:7] Wait("SIP/1030-00000201", "1") in new stack -- Executing [1033 at ramais:8] Dial("SIP/1030-00000201", "SIP/1033") in new stack [Feb 29 12:32:29] WARNING[4348][C-000001ce]: app_dial.c:2437 dial_exec_full: Unable to create channel of type 'SIP' (cause 20 - Subscriber absent) == Everyone is busy/congested at this time (1:0/0/1) -- Auto fallthrough, channel 'SIP/1030-00000201' status is 'CHANUNAVAIL' asterisk*CLI> I've created the file more push.sh qualification in the dialplan. But the Windows Phone can not run on Asterisk. Does anyone know another method for this? Thanks in advanced.