Hi Friends, I encountered a strange issue. I am running Asterisk 11.8.1 on Cent OS with no firewall running. It has 3 NIC interfaces.

in my sip.conf I have

allowguest=yes bindaddr=0.0.0.0
udpbindaddr = 0.0.0.0

But my Asterisk instance does not pick the call at all.

When I check the listening apps using lsof -i I get

asterisk 3046 asterisk 7u IPv4 1191172 0t0 TCP *:5038 (LISTEN)
asterisk 3046 asterisk 10u IPv4 1191186 0t0 UDP *:sip asterisk 3046 asterisk 11u IPv4 1191187 0t0 TCP *:sip (LISTEN)
asterisk 3046 asterisk 13u IPv4 1191196 0t0 UDP *:iax asterisk 3046 asterisk 15u IPv4 1191199 0t0 UDP *:commplex-main asterisk 3046 asterisk 16u IPv4 1191201 0t0 UDP *:4520
asterisk 3046 asterisk 19u IPv4 1191232 0t0 TCP
localhost:5038->localhost:43353 (ESTABLISHED)

But I van see the SIP Invite that comes into server and I can ngrep it as

U 10.85.0.24:5060 -> 10.25.172.10:5060
INVITE sip:+91712442211@10.25.172.10:5060;user=phone SIP/2.0. Via: SIP/2.0/UDP 10.85.0.24:5060;branch=z9hG4bK4l0vt3201860kmc5e6k0.1. Content-Type: application/sdp. To: . Contact: . From: ;tag[D23246313536415F1CF602. P-Asserted-Identity: . Privacy: none. Supported: histinfo,100rel. Request-Disposition: no-fork. P-Early-Media: supported. History-Info: ;index=1,
;index=1.1. Max-Forwards: 69. Accept: application/sdp. Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,UPDATE,PRACK. Call-ID: 1207028FDD814000006CCD7E@GPAS_GWCS6_ipm_1_2_6. CSeq: 1 INVITE. Content-Length: 171.
. v=0. o=- 10000 10000 IN IP4 10.85.0.24. s=-. t=0 0. m=audio 36740 RTP/AVP 8 101. c=IN IP4 10.85.0.24. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=ptime:20.

U 10.85.0.24:5060 -> 10.25.172.10:5060
INVITE sip:+91712442211@10.25.172.10:5060;user=phone SIP/2.0. Via: SIP/2.0/UDP 10.85.0.24:5060;branch=z9hG4bK4l0vt3201860kmc5e6k0.1. Content-Type: application/sdp. To: . Contact: . From: ;tag[D23246313536415F1CF602. P-Asserted-Identity: . Privacy: none. Supported: histinfo,100rel. Request-Disposition: no-fork. P-Early-Media: supported. History-Info: ;index=1,
;index=1.1. Max-Forwards: 69. Accept: application/sdp. Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,UPDATE,PRACK. Call-ID: 1207028FDD814000006CCD7E@GPAS_GWCS6_ipm_1_2_6. CSeq: 1 INVITE. Content-Length: 171.
. v=0. o=- 10000 10000 IN IP4 10.85.0.24. s=-. t=0 0. m=audio 36740 RTP/AVP 8 101. c=IN IP4 10.85.0.24. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=ptime:20.

U 10.85.0.24:5060 -> 10.25.172.10:5060
INVITE sip:+91712442211@10.25.172.10:5060;user=phone SIP/2.0. Via: SIP/2.0/UDP 10.85.0.24:5060;branch=z9hG4bK4l0vt3201860kmc5e6k0.1. Content-Type: application/sdp. To: . Contact: . From: ;tag[D23246313536415F1CF602. P-Asserted-Identity: . Privacy: none. Supported: histinfo,100rel. Request-Disposition: no-fork. P-Early-Media: supported. History-Info: ;index=1,
;index=1.1. Max-Forwards: 69. Accept: application/sdp. Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,UPDATE,PRACK. Call-ID: 1207028FDD814000006CCD7E@GPAS_GWCS6_ipm_1_2_6. CSeq: 1 INVITE. Content-Length: 171.
. v=0. o=- 10000 10000 IN IP4 10.85.0.24. s=-. t=0 0. m=audio 36740 RTP/AVP 8 101. c=IN IP4 10.85.0.24. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=ptime:20.

U 10.85.0.24:5060 -> 10.25.172.10:5060
INVITE sip:+91712442211@10.25.172.10:5060;user=phone SIP/2.0. Via: SIP/2.0/UDP 10.85.0.24:5060;branch=z9hG4bK4l0vt3201860kmc5e6k0.1. Content-Type: application/sdp. To: . Contact: . From: ;tag[D23246313536415F1CF602. P-Asserted-Identity: . Privacy: none. Supported: histinfo,100rel. Request-Disposition: no-fork. P-Early-Media: supported. History-Info: ;index=1,
;index=1.1. Max-Forwards: 69. Accept: application/sdp. Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,UPDATE,PRACK. Call-ID: 1207028FDD814000006CCD7E@GPAS_GWCS6_ipm_1_2_6. CSeq: 1 INVITE. Content-Length: 171.
. v=0. o=- 10000 10000 IN IP4 10.85.0.24. s=-. t=0 0. m=audio 36740 RTP/AVP 8 101. c=IN IP4 10.85.0.24. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=ptime:20.

U 10.85.0.24:5060 -> 10.25.172.10:5060
INVITE sip:+91712442211@10.25.172.10:5060;user=phone SIP/2.0. Via: SIP/2.0/UDP 10.85.0.24:5060;branch=z9hG4bK4l0vt3201860kmc5e6k0.1. Content-Type: application/sdp. To: . Contact: . From: ;tag[D23246313536415F1CF602. P-Asserted-Identity: . Privacy: none. Supported: histinfo,100rel. Request-Disposition: no-fork. P-Early-Media: supported. History-Info: ;index=1,
;index=1.1. Max-Forwards: 69. Accept: application/sdp. Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,UPDATE,PRACK. Call-ID: 1207028FDD814000006CCD7E@GPAS_GWCS6_ipm_1_2_6. CSeq: 1 INVITE. Content-Length: 171.
. v=0. o=- 10000 10000 IN IP4 10.85.0.24. s=-. t=0 0. m=audio 36740 RTP/AVP 8 101. c=IN IP4 10.85.0.24. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=ptime:20.

U 10.85.0.24:5060 -> 10.25.172.10:5060
INVITE sip:+91712442211@10.25.172.10:5060;user=phone SIP/2.0. Via: SIP/2.0/UDP 10.85.0.24:5060;branch=z9hG4bK4l0vt3201860kmc5e6k0.1. Content-Type: application/sdp. To: . Contact: . From: ;tag[D23246313536415F1CF602. P-Asserted-Identity: . Privacy: none. Supported: histinfo,100rel. Request-Disposition: no-fork. P-Early-Media: supported. History-Info: ;index=1,
;index=1.1. Max-Forwards: 69. Accept: application/sdp. Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,UPDATE,PRACK. Call-ID: 1207028FDD814000006CCD7E@GPAS_GWCS6_ipm_1_2_6. CSeq: 1 INVITE. Content-Length: 171.
. v=0. o=- 10000 10000 IN IP4 10.85.0.24. s=-. t=0 0. m=audio 36740 RTP/AVP 8 101. c=IN IP4 10.85.0.24. a=rtpmap:8 PCMA/8000. a=rtpmap:101 telephone-event/8000. a=ptime:20.

Please let me know what I miss in this configuration.

Best Regards, Roy.