Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

VOIP Faxing

We have tried to implement VOIP faxing with little success.

IOS 12.2.13.T3

Hardware 366x and 3745 platforms

We tried Cisco fax-relay 50% failure rate. (Global configuration CM processing the call.)

We tried (T38) fax-relay 50% failure rate. (Global configuration CM processing the call.)

We tried modem pass-through 50% failure rate. (Global configuration CM processing the call.)

Finally we took the CM out of the loop.

The routers negotiate the faxes via explicit dial-peers.

Sending Router:

!

dial-peer voice 8524 voip

description SIT four digit

preference 1

destination-pattern 8524

modem passthrough nse codec g711ulaw redundancy

voice-class codec 99

voice-class h323 1

session target ipv4:192.9.203.200

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

no vad

!

Reciving router:

!

dial-peer voice 8524 voip

description Field Health office

incoming called-number 8524

modem passthrough nse codec g711ulaw redundancy

!

This works about 98% of the time. It is a real pain to manage. There are a lot of dial-peers required for 90 faxes at 10 locations.

Does anyone have the global config working with the CM negotiating the fax?

1 REPLY
Bronze

Re: VOIP Faxing

Billy,

I am running FOIP on my 3745 with 100% sucess. I use the 3rd party fax tool on my Unity box and the messeges are distributed with that. I have dial-peers as well, but they are not that bad. We have 18 locations with 20 fax numbers per location, and our HQ has 100 fax numbers. Here is an excerpt of my config if you want to see it?

fax receive called-subscriber $d$

fax interface-type fax-mail

mta send server x.x.x.x port xx

mta send subject incoming Fax Message

mta send with-subject both

mta send postmaster it@reico.com

mta send mail-from hostname server@me.com

mta send mail-from username $s$

mta send return-receipt-to hostname it@reico.com

mta send return-receipt-to username $s$

mta receive maximum-recipients 0

call application voice on-ramp tftp://x.x.x.x/ipfax/onramp/app_faxmail_onramp

.2.0.1.2.tcl

!

call application voice off-ramp tftp://x.x.x.x/ipfax/offramp/app_faxmail_offr

amp.2.0.1.1.tcl

dial-peer voice 100 pots

application on-ramp

incoming called-number 830[1,3,5,7,9]

direct-inward-dial

dial-peer voice 2001 mmoip

application fax_on_vfc_onramp_app out-bound

destination-pattern 8...

information-type fax

session target mailto:faxes@me.com

dsn success

Geoff

96
Views
0
Helpful
1
Replies