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Xmedius fax about 5% inbound faxes failing

Unanswered Question
Oct 31st, 2013
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CUCM 8.5

Xmediusfax ver 6.5

MGCP Gateway

CenturyLink PRI


Some faxes failing. It's only about 5% of the total but these are customers and I need to fix it.


We had this problem early on and Xmedius tech support and Cisco TAC were able to fix most of it by changing the "gain" setting on the pri.


gateway.bmp

It's set as low as possible but I still have some customers that I cannot get faxes from. I can reroute the faxes to a standard fax machine off of a VG224 and they come through fine.


Xmedius tech support has said it's a setting in the MGCP gateway relating to fax rate but I'm not sure what to look at.


MGCP settings are:


sho mgcp

MGCP Admin State ACTIVE, Oper State ACTIVE - Cause Code NONE

MGCP call-agent: 10.170.100.10 2427 Initial protocol service is MGCP 0.1

MGCP validate call-agent source-ipaddr DISABLED

MGCP validate domain name DISABLED

MGCP block-newcalls DISABLED

MGCP send SGCP RSIP: forced/restart/graceful/disconnected DISABLED

MGCP quarantine mode discard/step

MGCP quarantine of persistent events is ENABLED

MGCP dtmf-relay for VoIP is SDP controlled

MGCP dtmf-relay for voAAL2 is SDP controlled

MGCP voip modem passthrough mode: NSE, codec: g711ulaw, redundancy: DISABLED,

MGCP voaal2 modem passthrough disabled

MGCP voip modem relay: Disabled

MGCP voip mdste modem relay: Disabled

MGCP voip mdste modem mer relay: Disabled

MGCP T.38 Named Signalling Event (NSE) response timer: 200

MGCP Network (IP/AAL2) Continuity Test timer: 200

MGCP 'RTP stream loss' timer disabled

MGCP request timeout 500

MGCP maximum exponential request timeout 4000

MGCP rtp unreachable timeout 1000 action notify

MGCP gateway port: 2427, MGCP maximum waiting delay 3000

MGCP restart delay 0, MGCP vad DISABLED

MGCP rtrcac DISABLED

MGCP system resource check DISABLED

MGCP xpc-codec: DISABLED, MGCP persistent hookflash: DISABLED

MGCP persistent offhook: ENABLED, MGCP persistent onhook: DISABLED

MGCP piggyback msg ENABLED, MGCP endpoint offset DISABLED

MGCP simple-sdp ENABLED

MGCP undotted-notation DISABLED

MGCP codec type g711ulaw, MGCP packetization period 20

MGCP JB threshold lwm 30, MGCP JB threshold hwm 150

MGCP LAT threshold lwm 150, MGCP LAT threshold hwm 300

MGCP PL threshold lwm 1000, MGCP PL threshold hwm 10000

MGCP CL threshold lwm 1000, MGCP CL threshold hwm 10000

MGCP playout mode is adaptive 60, 40, 1000 in msec

MGCP Fax Playout Buffer is 300 in msec

MGCP media (RTP) dscp: ef, MGCP signaling dscp: af31

MGCP default package: trunk-package

MGCP supported packages: gm-package dtmf-package trunk-package line-package

                         hs-package rtp-package atm-package ms-package dt-package

                         mo-package mt-package sst-package fxr-package pre-package

                         md-package

MGCP Digit Map matching order: shortest match

SGCP Digit Map matching order: always left-to-right

MGCP VoAAL2 ignore-lco-codec DISABLED

MGCP T.38 Max Fax Rate is DEFAULT

MGCP T.38 Fax is ENABLED

MGCP T.38 Fax ECM is DISABLED

MGCP T.38 Fax NSF Override is DISABLED

MGCP T.38 Fax Low Speed Redundancy: 0

MGCP T.38 Fax High Speed Redundancy: 0

MGCP Fax relay SG3-to-G3: ENABLED

MGCP Fax relay ANSam suppression: DISABLED

MGCP control bound to interface GigabitEthernet0/0

MGCP media bound to interface GigabitEthernet0/0

MGCP Upspeed payload type for G711ulaw: 0,  G711alaw: 8

MGCP Dynamic payload type for Cisco fax indication: 96, Cisco fax ack: 97

MGCP Dynamic payload type for G.726-16K codec

MGCP Dynamic payload type for G.726-24K codec

MGCP Dynamic payload type for G.726-32K codec

MGCP Dynamic payload type for G.Clear codec

MGCP Dynamic payload type for NSE is 100

MGCP Dynamic payload type for NTE is 99

MGCP rsip-range is enabled for TGCP only.

MGCP Comedia role is NONE

MGCP Comedia check media source is DISABLED

MGCP Comedia SDP force is DISABLED

MGCP g729 variants use static payload type and contain annexb in SDP

MGCP Guaranteed scheduler time is DISABLED

MGCP Disconnect delay error recovery DISABLED

MGCP support for a:crypto RFC notation is DISABLED

MGCP DNS stale threshold is 30 seconds


Any help appreciated...

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David Perez Thu, 10/31/2013 - 09:40
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I have a very similar issue to this one. Ours is mostly for outbound faxes, but we also have this issue for inbound.

I still haven't been able to resolve it.  Maybe you'll have more luck, this was the thread i opened : https://supportforums.cisco.com/message/4052509#4052509


What error code are you getting from XMedius ?

Our failure rate is about 3%-4%

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