05-29-2008 05:04 AM - edited 03-15-2019 10:56 AM
Hi,
I want to configure Voice gateway and Unified Call Manager 6.1 for the Fax Server (GFI Fax maker). Fax server support only SIP and T.38 for fax protocol.
The Voice gateway is already configured with unified Call Manager using MGCP protocol.
Can any body help me out regarding this scenario.
Regards,
Zeeshan
Solved! Go to Solution.
05-29-2008 07:15 AM
I am not familiar with the GFI Fax maker fax server but if it supports T.38 over SIP then this should work, especially if this fax server uses a Dialogic fax engine such as SR140.
On the Unified CM, you need to configure a SIP trunk pointing to your fax server using the G.711 codec. On your existing MGCP gateway, you need to configure protocol-based T.38 fax relay. By default the Cisco MGCP gateways use an NSE-based switchover for T.38. The commands to configure protocol-based T.38 on the MGCP gateway are -
no mgcp fax t38 inhibit
mgcp default-package fxr-package
mgcp package-capability fxr-package
The first two commands above should be enabled by default. You must then reset the MGCP process on the gateway for these commands to work ("mgcp", "no mgcp" in config mode).
Confirm that you have the call routing configured correctly on Unified CM and then give this a try and let us know how it works. You also may want to contact the fax server vendor and confirm interoperability with Unified CM and see if they have sample configs available.
Regards,
David
05-29-2008 07:15 AM
I am not familiar with the GFI Fax maker fax server but if it supports T.38 over SIP then this should work, especially if this fax server uses a Dialogic fax engine such as SR140.
On the Unified CM, you need to configure a SIP trunk pointing to your fax server using the G.711 codec. On your existing MGCP gateway, you need to configure protocol-based T.38 fax relay. By default the Cisco MGCP gateways use an NSE-based switchover for T.38. The commands to configure protocol-based T.38 on the MGCP gateway are -
no mgcp fax t38 inhibit
mgcp default-package fxr-package
mgcp package-capability fxr-package
The first two commands above should be enabled by default. You must then reset the MGCP process on the gateway for these commands to work ("mgcp", "no mgcp" in config mode).
Confirm that you have the call routing configured correctly on Unified CM and then give this a try and let us know how it works. You also may want to contact the fax server vendor and confirm interoperability with Unified CM and see if they have sample configs available.
Regards,
David
05-29-2008 07:42 AM
I d also suggest adding following commands.
no mgcp fax t38 ecm
mgcp fax rate 14400
no ccm-manager fax protocol cisco
####- disables cisco fax relay.
08-27-2008 07:14 AM
I have a CM 6.1 with a GFI fax server
using mgcp
it works with this mgcp config
mgcp
mgcp call-agent 10.18.9.12 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp rtp unreachable timeout 1000 action notify
mgcp modem passthrough voip mode nse
mgcp package-capability mf-package
mgcp package-capability rtp-package
mgcp package-capability res-package
mgcp package-capability sst-package
mgcp package-capability fxr-package
mgcp package-capability pre-package
no mgcp timer receive-rtcp
mgcp sdp simple
no mgcp fax t38 inhibit
mgcp rtp payload-type g726r16 static
but the site has regular power outages that last longer than their UPS...and when CM and voice gateway come back up the mgcp config changes and fax server no longer works
it changes to
no mgcp package-capability res-package
no mgcp package-capability fxr-package
any thought on how i could prevent this
thanks
Colum
08-27-2008 07:31 AM
Do you have the command ccm-manager config-server command.
It looks as if the CCM attempts to reconfigure the MGCP gateway.
If you have that command, remove it.
08-27-2008 07:42 AM
i have
ccm-manager config server 10.20.5.11
ccm-manager config
will taking it out affect the voice?
08-27-2008 07:43 AM
This is a bug with the ccm-manager config feature. The Cisco defect id is CSCsr41541. The fix for this defect has not yet been integrated into an IOS release that is downloadable from cisco.com but I am guessing that the next 12.4 or 12.4T release will have it. If you want more information on this defect and the availability of its fix, then your best bet would be to contact the Cisco TAC.
The other option/workaround is to disable the ccm-manager config feature once you have the desired configuration working on your voice gateway.
Regards,
David
08-27-2008 11:23 PM
I have this IOS (c2800nm-spservicesk9-mz.124-20.T.bin)and i rebooted (Reload) my voice gateway but the configuration didnt changed.
Regards,
Zeeshan
12-13-2012 02:49 AM
Hi there,
i have the same issue with CCM 7.1.2 and 3845 (12.4 ios) mgcp controlled gw's.
The call proceeds, but when one fax rings once, then the call fails..
I think that is something to the "handshaking" , but the debug shows me an "Requested circuit/channel not available" error.
I am sending you my "sh mgcp" results :
VGW-S173A-FL5-1#sh mgcp
MGCP Admin State ACTIVE, Oper State ACTIVE - Cause Code NONE
MGCP call-agent: CCM-S173A-FL5-2 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 voip codec all mode out-of-band
MGCP dtmf-relay for voAAL2 is SDP controlled
MGCP voip modem passthrough disabled
MGCP voaal2 modem passthrough disabled
MGCP voip modem 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 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: mt-package
MGCP supported packages: gm-package dtmf-package trunk-package line-package
hs-package rtp-package atm-package ms-package dt-packag
e
mo-package res-package mt-package sst-package fxr-packa
ge
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 ENABLED
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 bind :DISABLED
MGCP media bind :DISABLED
MGCP Upspeed payload type for G711ulaw: 0, G711alaw: 126
MGCP Dynamic payload type for Cisco fax indication: 96, Cisco fax ack: 97
MGCP Static 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 DNS stale threshold is 30 seconds
and my sh run , mgcp part :
mgcp
mgcp call-agent CCM-S173A-FL5-2 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp package-capability rtp-package
mgcp package-capability sst-package
mgcp package-capability pre-package
mgcp default-package mt-package
no mgcp timer receive-rtcp
mgcp sdp simple
mgcp fax t38 ecm
mgcp rtp payload-type cisco-pcm-switch-over-alaw 126
mgcp rtp payload-type g726r16 static
mgcp behavior g729-variants static-pt
!
mgcp profile default
!
!
!
dial-peer voice 10 pots
service mgcpapp
!
!
Anyone with any idea.. ?
thx!
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