10-12-2010 05:19 AM - edited 03-16-2019 01:17 AM
Dear All,
I have a fax machine model ( Muratec F 68P) which is terminated on Cisco VG224 , the VG224 is using SCCP with CUCM 7.1.3 ,the problem is when I need to send a fax from the fax machine I can't send and when I used the fax for a voice call it was successed .
also when using the fax to send a fax I get a strange behaviar , that I get a busy tone for about 5 seconds , then I get normal tone to dial and after I enter the destenation number it makes disconnect after about 10 seconed .
for the call setup ,it is as the following :
Fax ---> VG224 -----> CUCM ------> Voice gateway (MGCP fxo port ) -----> PSTN ------> Fax .
So can any one help me for this issue ?Is there any advice for any item on the call path to be added or checked?
Thanks,
Ahmed Ellboudy
10-12-2010 06:36 AM
SCCP only supports NSE based switchovers. You need to configure the MGCP gateway for an NSE based switchover. Since it is Cisco and POTS on both sides, I'd recommend modempassthrough here.
Do you have this configured?
VG224:
voice service voip
fax protocol none
modem passthrough nse codec g711u
On PSTN gateway:
mgcp modem passthrough voip codec g711ulaw
mgcp fax t38 inhibit
If you still have issues, collect:
sh run
sh ver
sh call history voice br
And the following from each side during a failure:
debug voip rtp sess name
debug isdn q931
debug mgcp pack
debug voip ccapi inout
EDIT: Had a command wrong.
10-13-2010 02:49 PM
Dear Steven,
Thank you for your support ,it is working today by your recommendation.
Best Regards,
Ahmed Ellboudy
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