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AudioCodes MP112 Outbound Issue - FXS

Discussion in 'Windows' started by epcom, Feb 9, 2012.

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  1. epcom

    Jul 14, 2010
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    There seems to be a lot of forum talk about AudioCodes / Configuration of device. However, what has worked in the past and what works now seems to have changed. Yesterday we had a power outage. For some reason our AudioCodes MP112 gateway decided to restart itself to default. On a positive note the MP114 stayed up and running the whole time perfectly (and yes they are on APC's).

    I then went to reconfigure the MP112 FXS - which I hadn't done in a while. I got the device registered on 3CX with its two endpoints and calls started to flow back through the unit instantly. However, 1/2 later I got a compliant that outbound calling was no longer working. I made a few changes to the software and configuration and it still did not work. Now that I have played with it for many hours - I have decided I need to reach out to everyone else for some support on this issue. The problem that I am having has seems to be with the invite header (or so the 3CX Server Log is indicating)...please see below:

    AudioCodes FXS #1: Extension 102 - Internal Address -
    Public Address of AudioCodes Location: - Site A - Behind router this site, however, STUN is on the AudioCodes Device
    Public Address of PBX Location: - Site PBX (internal address of PBX is
    Extension Trying to Call: 951 at Site PBX

    11:52:39.561 [CM502001]: Source info: From: <sip:102@>;tag=1c149023079<sip:951@;user=phone>
    11:52:39.561 [CM503013]: Call(152): Incoming call rejected, caller is unknown; msg=SipReq: INVITE 951@ tid=ac149403280 cseq=INVITE contact=102@ / 2 from(wire)
    11:52:39.408 [CM500002]: Unidentified incoming call. Review INVITE and adjust source identification:
    INVITE sip:951@;user=phone SIP/2.0
    Via: SIP/2.0/UDP;branch=z9hG4bKac149026332
    Max-Forwards: 70
    Contact: <sip:102@>
    To: <sip:951@;user=phone>
    From: <sip:102@>;tag=1c149023079
    Call-ID: 14902269892201212013@
    CSeq: 1 INVITE
    Supported: em, 100rel, timer, replaces, path, resource-priority
    User-Agent: Audiocodes-Sip-Gateway-MP-112 FXS/v.5.20A.026.007
    Privacy: none
    P-Asserted-Identity: <tel:102>
    Content-Length: 0

    If anyone has had outgoing call problems on the AudioCodes MP-11x (2/4/8) - and can share how they go around it, that would be deeply appreciated. If you have any questions about the scenario above please feel free to share any input and once again this is the FXS model not FXO. Thanks.
  2. leejor

    leejor Well-Known Member

    Jan 22, 2008
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    Why am I not seeing any port numbers in the log? How does 3CX contact the set/ATA with just a public IP, no port?
  3. dwarren

    Oct 24, 2014
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    I am having the same problem with dialing out from an FXS extension on my Audio Codes FXS gateway. I can call out to an internal extension on the 3CX, but I am not able to dial out to the PSTN or SIP trunks. Inbound calls work fine.

    I'm curious if you ever resolved this issue and how.

    Thank you
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