This is what I get from SIP DEBUG when I press *: <-- SIP read from xxx.xxx.xxx.202:5060: INFO sip:64@xxx.xxx.xxx.201 SIP/2.0 Via: SIP/2.0/UDP xxx.xxx.xxx.202;branch=z9hG4bK6377fb4a74c53ef0 From: ;tag=8fc179bb75822b31 To: "64" ;tag=as5ddc346b Contact: Supported: replaces Call-ID: 3b23c22d01c12ba55fb930ac276f700c@xxx.xxx.xxx.201 CSeq: 37895 INFO User-Agent: Grandstream BT120 1.0.8.17 Max-Forwards: 70 Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE ontent-Type: application/dtmf-relay Content-Length: 23 Signal=10 Duration=480 --- (13 headers 2 lines)--- Receiving INFO! * DTMF-relay event received: * Transmitting (no NAT) to xxx.xxx.xxx.202:5060: SIP/2.0 200 OK Via: SIP/2.0/UDP xxx.xxx.xxx.202;branch=z9hG4bK6377fb4a74c53ef0;received=xxx.xxx.xxx.202 From: ;tag=8fc179bb75822b31 To: "64" ;tag=as5ddc346b Call-ID: 3b23c22d01c12ba55fb930ac276f700c@xxx.xxx.xxx.201 CSeq: 37895 INFO User-Agent: Asterisk PBX Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Contact: Content-Length: 0 X-Asterisk-HangupCause: Normal Clearing ========================================================================================= Then nothing happens until I hang up: <-- SIP read from xxx.xxx.xxx.202:5060: BYE sip:64@xxx.xxx.xxx.201 SIP/2.0 Via: SIP/2.0/UDP xxx.xxx.xxx.202;branch=z9hG4bK51ad0876e577dbbe From: ;tag=8fc179bb75822b31 To: "64" ;tag=as5ddc346b Supported: replaces Call-ID: 3b23c22d01c12ba55fb930ac276f700c@xxx.xxx.xxx.201 CSeq: 37896 BYE User-Agent: Grandstream BT120 1.0.8.17 Max-Forwards: 70 Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE Content-Length: 0 --- (11 headers 0 lines)--- Sending to xxx.xxx.xxx.202 : 5060 (non-NAT) Transmitting (no NAT) to xxx.xxx.xxx.202:5060: SIP/2.0 200 OK Via: SIP/2.0/UDP xxx.xxx.xxx.202;branch=z9hG4bK51ad0876e577dbbe;received=xxx.xxx.xxx.202 From: ;tag=8fc179bb75822b31 To: "64" ;tag=as5ddc346b Call-ID: 3b23c22d01c12ba55fb930ac276f700c@xxx.xxx.xxx.201 CSeq: 37896 BYE User-Agent: Asterisk PBX Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Contact: Content-Length: 0 X-Asterisk-HangupCause: Normal Clearing ========================================================================================= misdn.log contains something like this when * is pressed: Thu Sep 21 15:09:21 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 15:09:21 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 15:09:21 2006: P[ 0] misdn_jb_empty: read:128 | Bufferstatus:20 p:81 37390 Thu Sep 21 15:09:21 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 15:09:21 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 15:09:21 2006: P[ 1] Jitterbuffer Underrun. Thu Sep 21 15:09:21 2006: P[ 1] Transmitting 20 samples 2 misdn Thu Sep 21 15:09:21 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 15:09:21 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8137390 Thu Sep 21 15:09:21 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 15:09:21 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 15:09:21 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8137390 Thu Sep 21 15:09:21 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 15:09:21 2006: P[ 1] writing 128 bytes 2 asterisk and then eight seconds later Thu Sep 21 15:09:29 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8137390 Thu Sep 21 15:09:29 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 15:09:29 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 15:09:29 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8137390 Thu Sep 21 15:09:29 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 15:09:29 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 15:09:29 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8137390 Thu Sep 21 15:09:29 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 15:09:29 2006: P[ 1] Select Timed out Thu Sep 21 15:09:29 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8137390 Thu Sep 21 15:09:29 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 15:09:29 2006: P[ 1] Select Timed out ========================================================================================= Sometimes I get the IND : Digit * on the mISDN end in the moment I hang up the SIP phone, but not earlier: Thu Sep 21 16:08:09 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:09 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:09 2006: P[ 1] Select Timed out Thu Sep 21 16:08:09 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:09 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:09 2006: P[ 1] Select Timed out Thu Sep 21 16:08:09 2006: P[ 1] * IND : Digit * Thu Sep 21 16:08:09 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:09 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:09 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 16:08:09 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:09 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:09 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 16:08:09 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:09 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:09 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 16:08:09 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:09 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:09 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 16:08:10 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:10 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:10 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 16:08:10 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:10 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:10 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 16:08:10 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:10 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:10 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 16:08:10 2006: P[ 0] misdn_jb_empty: Wait...requested:128 p:8136f00 Thu Sep 21 16:08:10 2006: P[ 1] Transmitting 128 samples 2 misdn Thu Sep 21 16:08:10 2006: P[ 1] writing 128 bytes 2 asterisk Thu Sep 21 16:08:10 2006: P[ 1] * IND : HANGUP pid:4 ctx:Extern dad:71 oad:64 State:CONNECTED Thu Sep 21 16:08:10 2006: P[ 1] --> l3id:2002f Thu Sep 21 16:08:10 2006: P[ 1] --> cause:16 Thu Sep 21 16:08:10 2006: P[ 1] --> out_cause:16 Thu Sep 21 16:08:10 2006: P[ 1] --> state:CONNECTED