Outbound FAX is not working

Question

Outbound FAX is not working. Below is the Call Flow
FAX ServeràH.323àCUCMàMGCPàGatewayàE1 PRIàPSTN
The CUCM version is 8.0.3 while the gateway IOS version is 12.4(24)T5.
Collected the following
Packet Captures between FAX server and CUCM
CUCM traces
Debugs in PSTN Gateway
Below are the observations
H.225 Setup message is seen in packet captures and CUCM traces. See snippet below
16:53:00.684 |In  Message -- H225SetupMsg -- Protocol= H225Protocol|*^*^*
16:53:00.684 |Ie - H225BearerCapabilityIe -- IEData= 04 03 90 90 A5 |*^*^*
16:53:00.685 |Ie - Q931CalledPartyIe -- IEData= 70 09 A1 39 36 33 32 33 39 39 38 |*^*^*
16:53:00.685 |Ie - H225UserUserIe -- IEData= 7E 00 86 05 30 88 06 00 08 91 4A 00 05 22 80 B5 00 00 30 13 44 69 61 6C 6F 67 69 63 20 43 6F 72 70 6F 72 61 74 69 6F 6E 00 AC 15 98 05 06 B8 00 14 15 79 1B C9 3E 02 1F 3F 03 80 B9 FE 5F AC 75 00 D5 0D 98 00 07 00 AC 15 98 14 07 FB 11 00 25 13 79 1B C9 3E 02 1F 3F 03 80 B9 FE 5F AC 75 01 00 01 00 01 00 01 00 01 00 01 40 40 B5 00 00 30 14 44 69 61 6C 6F 67 69 63 20 43 6F 72 70 6F 72 61 74 69 6F 6E 10 80 01 00 |*^*^*
16:53:00.685 |MMan_Id= 0. (iep=  0 dsl=  0 sapi=  0 ces= 0 IpAddr=149815ac IpPort=2043)|*^*^*
16:53:00.685 |IsdnMsgData1= 08 02 5B CA 05 04 03 90 90 A5 70 09 A1 39 36 33 32 33 39 39 38 7E 00 86 05 30 88 06 00 08 91 4A 00 05 22 80 B5 00 00 30 13 44 69 61 6C 6F 67 69 63 20 43 6F 72 70 6F 72 61 74 69 6F 6E 00 AC 15 98 05 06 B8 00 14 15 79 1B C9 3E 02 1F 3F 03 80 B9 FE 5F AC 75 00 D5 0D 98 00 07 00 AC 15 98 14 07 FB 11 00 25 13 79 1B C9 3E 02 1F 3F 03 80 B9 FE 5F AC 75 01 00 01 00 01 00 01 00 01 00 01 40 40 B5 00 00 30 14 44 69 61 6C 6F 67 69 63 20 43 6F 72 70 6F 72 61 74 69 6F 6E 10 80 01 00 |*^*^*
16:53:00.685 |value H323-UserInformation ::= |*^*^*
16:53:00.685 |SPROCRas - {
  h323-uu-pdu
    h323-message-body setup :
        protocolIdentifier { 0 0 8 2250 0 5 },
        sourceInfo
          vendor
            vendor
              t35CountryCode 181,
              t35Extension 0,
              manufacturerCode 48
            productId '4469616C6F67696320436F72706F726174 ...'H
          terminal
          mc FALSE,
          undefinedNode FALSE
        destCallSignalAddress ipAddress :
            ip 'AC159805'H,
            port 1720
        activeMC FALSE,
        conferenceID '1415791BC93E021F3F0380B9FE5FAC75'H,
        conferenceGoal create : NULL,
        callType pointToPoint : NULL,
        sourceCallSignalAddress ipAddress :
            ip 'AC159814'H,
            port 2043
        callIdentifier
          guid '2513791BC93E021F3F0380B9FE5FAC75'H
        mediaWaitForConnect FALSE,|*^*^*
16:53:00.686 |
        canOverlapSend FALSE,
        multipleCalls FALSE,
        maintainConnection FALSE,
        presentationIndicator presentationAllowed : NULL,
        screeningIndicator userProvidedVerifiedAndFailed
    nonStandardData
      nonStandardIdentifier h221NonStandard :
          t35CountryCode 181,
          t35Extension 0,
          manufacturerCode 48
      data '4469616C6F67696320436F72706F726174 ...'H
    h245Tunneling FALSE
  }|*^*^*
Based on this, the CUCM is doing correct digit analysis and routes the call to MGCP gateway’s endpoint S0/SU0/DS1-0/[email protected]
Gateway sends the ISDN q931 setup message to PSTN for which it does get the Call Proceed and Progress indicators
The gateway is dropping call in Cause Code “0x80AF - Resource unavailable, unspecified”. See Snippet below
016325: *May  2 17:12:47.661: MGCP Packet received from 172.21.152.5:2427--->
CRCX 5493 S0/SU0/DS1-0/[email protected] MGCP 0.1
C: D000000003d354dd000000F500000016
X: 1
L: p:20, a:PCMU, s:off, t:b8, fxr/fx:t38
M: recvonly
R: D/[0-9ABCD*#]
Q: process,loop
<---
016383: *May  2 17:12:47.669: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8  callref = 0x0016
        Sending Complete
        Bearer Capability i = 0x8090A3
                Standard = CCITT
                Transfer Capability = Speech 
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0xA98381
                Exclusive, Channel 1
        Calling Party Number i = 0x0083, N/A
                Plan:Unknown, Type:Unknown
        Called Party Number i = 0xA0, '96323998'
                Plan:Unknown, Type:National
016384: *May  2 17:12:47.757: ISDN Se0/0/0:15 Q931: RX <- CALL_PROC pd = 8  callref = 0x8016
        Channel ID i = 0xA98381
                Exclusive, Channel 1
016385: *May  2 17:12:47.761: ISDN Se0/0/0:15 Q931: RX <- PROGRESS pd = 8  callref = 0x8016
        Progress Ind i = 0x8181 - Call not end-to-end ISDN, may have in-band info
016386: *May  2 09:12:48.193: %C3800_ENVM-3-MFAIL_OFF: There is more than one failure with the Power System 1 or this Power System h
as been turned off.
016387: *May  2 17:12:51.669: //494/2E810F7780E1/CCAPI/cc_handle_inter_digit_timer:
   Generate inter-digit timeout CC_EV_CALL_DIGIT_END event
016388: *May  2 17:12:59.773: ISDN Se0/0/0:15 Q931: TX -> DISCONNECT pd = 8  callref = 0x0016
        Cause i = 0x80AF - Resource unavailable, unspecified
From the Fax Utility it shows No answer at Fax Number. Also it rings the remmote fax machine twice (Actually i can hear the ring as the macine is beside me)
Please help me to solve the issue. Except this other functions are working properly. Moreover I can send internal Fax from one user to other.
Thanks and Regards,
Ashfaque.

Answer 1

Just a quick update, as per Cisco TAC the CUCM version 8.0.3 does not support gateway IOS version is 12.4(24)T5 (Later I found its only for conference option). So we upgraded the IOS to 15.1(1)T3. But still having the sam issue.
Thanks,
Ashfaque