2 Replies Latest reply on May 1, 2017 2:16 PM by bascheew

    Having issues when transferring calls through an Adtran SBC

    bascheew New Member

      We have an Adtran 924e configured as an SBC.  The outside provider is AT&T and inside is running 3CX PBX.  All calls are working fine with one exception.  When we have a call from the outside and we attempt to transfer it to another call on the outside we get a "500 Server Internal Error" from the SBC.  Here are the relevant parts from the config.

       

      voice feature-mode network

      voice timeouts preconnected 0

      voice timeouts preconnecting 0

      voice transfer-mode local

      voice forward-mode local

      !

      !

      voice trunk T01 type sip

        description "AT&T - Primary"

        match dnis "NXX-XXXX" substitute "828-NXX-XXXX" name "Prepend Area Code"

        sip-server primary 1.1.1.1

        grammar from host local

      !

      voice trunk T02 type sip

        description "AT&T - Secondary"

        match dnis "NXX-XXXX" substitute "828-NXX-XXXX" name "Prepend Area Code"

        sip-server primary 2.2.2.2

        grammar from host local

      !

      voice trunk T04 type sip

        description "3CX"

        sip-server primary 10.16.0.6

        grammar from host local

        transfer-mode network

      !

      !

      voice grouped-trunk AT&T

        trunk T01

        trunk T02

        accept NXX-XXXX cost 0

        accept 1-NXX-NXX-XXXX cost 0

        accept NXX-NXX-XXXX cost 0

      !

      !

      voice grouped-trunk 3CX

        trunk T04

        accept ***OUR INTERNAL NUMBERS ARE HERE*** cost 0

      !
      ip rtp symmetric-filter

      ip rtp media-anchoring

       

       

      And here are the SIP logs from the SBC:

       

       

       

      15:42:05.380 SIP.MSG INVITE RSP RX 8281111111 8283333333
      SIP/2.0 180 Ringing
      From: "Test User"<sip:8281111111@3.3.3.3:5060;transport=UDP>;tag=5355bf0-20fd1daa-13c4-2bf59-9b6bffaa-2bf59
      To: <sip:8283333333@1.1.1.1:5060>;tag=192453536-1492112525261
      Call-ID: 53b2720-20fd1daa-13c4-2bf59-c555a872-2bf59@3.3.3.3
      CSeq: 1 INVITE
      Via: SIP/2.0/UDP 3.3.3.3:5060;branch=z9hG4bK-2bf59-abb76ec-335c53f7
      Supported: timer
      Call-Info: <sip:2.2.2.3>;appearance-index=1
      Contact: <sip:1.1.1.1:5060;transport=udp>
      Allow: INVITE,ACK,CANCEL,BYE,REFER,INFO,NOTIFY,PRACK,OPTIONS
      Content-Disposition: session;handling=required
      Content-Type: application/sdp
      Content-Length: 217

      v=0
      o=BroadWorks 36898327 1 IN IP4 2.2.2.4
      s=-
      c=IN IP4 2.2.2.4
      t=0 0
      m=audio 31790 RTP/AVP 0 101
      a=rtpmap:0 PCMU/8000
      a=rtpmap:101 telephone-event/8000
      a=fmtp:101 0-15
      a=sendrecv
      a=maxptime:20

      15:42:05.384 SIP.MSG INVITE RSP TX 8281111111 8283333333
      SIP/2.0 183 Session Progress
      From: "Test User"<sip:8281111111@172.16.0.7:5060>;tag=ee4ac675
      To: <sip:8283333333@172.16.0.7:5060>;tag=5328ad8-20fd1daa-13c4-2bf5b-b22b0b07-2bf5b
      Call-ID: YzJhMWMxOTc4NGE0YjdkZmQ0MzI0MTQwOGI1YTE4MDY.
      CSeq: 1 INVITE
      Via: SIP/2.0/UDP 10.16.0.6:5060;rport=5060;branch=z9hG4bK-d8754z-ca08cc64a178df5f-1---d8754z-
      Contact: <sip:8283333333@172.16.0.7:5060;transport=UDP>
      Supported: 100rel,replaces
      Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER, REGISTER
      User-Agent: ADTRAN_Total_Access_924e_2nd_Gen/R12.3.1.E
      Content-Type: application/sdp
      Content-Length: 211

      v=0
      o=BroadWorks 36898327 1 IN IP4 172.16.0.7
      s=-
      c=IN IP4 172.16.0.7
      t=0 0
      m=audio 12444 RTP/AVP 0 101
      a=sendrecv
      a=maxptime:20
      a=rtpmap:0 PCMU/8000
      a=rtpmap:101 telephone-event/8000
      a=fmtp:101 0-15

      15:42:06.771 SIP.MSG INVITE REQ RX 8281111111 8283333333
      INVITE sip:8283333333@172.16.0.7:5060 SIP/2.0
      From: "9001"<sip:8281111111@172.16.0.7:5060>;tag=73205c30
      To: <sip:8283333333@172.16.0.7:5060>
      Call-ID: OGNhM2Q1ZTVkNTA5NGVlYzc0ZWEzNWQ3ZGY0NzRiM2Q.
      CSeq: 1 INVITE
      Via: SIP/2.0/UDP 10.16.0.6:5060;rport;branch=z9hG4bK-d8754z-a106c01783148111-1---d8754z-
      Max-Forwards: 70
      Supported: replaces
      User-Agent: 3CXPhoneSystem 14.0.49169.513 (48654)
      Remote-Party-ID: "8281111111"<sip:8281111111@172.16.0.7:5060>;party=calling
      Contact: <sip:8281111111@10.16.0.6:5060>
      Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,REGISTER,SUBSCRIBE,NOTIFY,REFER,INFO,MESSAGE
      Replaces: YzJhMWMxOTc4NGE0YjdkZmQ0MzI0MTQwOGI1YTE4MDY.;to-tag=5328ad8-20fd1daa-13c4-2bf5b-b22b0b07-2bf5b;from-tag=ee4ac675
      Content-Length: 0


      15:42:06.775 SIP.MSG INVITE RSP TX 8281111111 8283333333
      SIP/2.0 100 Trying
      From: "9001"<sip:8281111111@172.16.0.7:5060>;tag=73205c30
      To: <sip:8283333333@172.16.0.7:5060>
      Call-ID: OGNhM2Q1ZTVkNTA5NGVlYzc0ZWEzNWQ3ZGY0NzRiM2Q.
      CSeq: 1 INVITE
      Via: SIP/2.0/UDP 10.16.0.6:5060;rport=5060;branch=z9hG4bK-d8754z-a106c01783148111-1---d8754z-
      Contact: <sip:8283333333@172.16.0.7:5060;transport=UDP>
      Supported: 100rel,replaces
      Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER, REGISTER
      User-Agent: ADTRAN_Total_Access_924e_2nd_Gen/R12.3.1.E
      Content-Length: 0


      15:42:09.881 SIP.MSG INVITE RSP TX 8281111111 8283333333
      SIP/2.0 500 Server Internal Error
      From: "9001"<sip:8281111111@172.16.0.7:5060>;tag=73205c30
      To: <sip:8283333333@172.16.0.7:5060>;tag=535f448-20fd1daa-13c4-2bf60-9f6daffd-2bf60
      Call-ID: OGNhM2Q1ZTVkNTA5NGVlYzc0ZWEzNWQ3ZGY0NzRiM2Q.
      CSeq: 1 INVITE
      Via: SIP/2.0/UDP 10.16.0.6:5060;rport=5060;branch=z9hG4bK-d8754z-a106c01783148111-1---d8754z-
      Supported: 100rel,replaces
      Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER, REGISTER
      User-Agent: ADTRAN_Total_Access_924e_2nd_Gen/R12.3.1.E
      Content-Length: 0