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New Member

Configuring CLID for FAX when main office number already added.

Hey,

I have four faxes on a CME that I want to be able to present there correct CLID but

on all of the outgoing POTS dial-peers we have the main office number configured. Is there

a way for the Faxes to present there correct number despite this?

5 REPLIES
Silver

Re: Configuring CLID for FAX when main office number already add

Cisco provides two methods for fax relay. One method is a Cisco-proprietary method called Cisco fax relay, and it is described in this chapter. The second method is based on the ITU-T T.38 standard, and it is described in Chapter 6, "Configuring T.38 Fax Relay."

T.38 fax relay is the default mode for passing faxes through a VoIP network, and Cisco fax relay is the default fax relay type on Cisco voice gateways. This capability has been supported in Cisco IOS Release 11.3 and later releases and is widely available. Cisco fax relay uses Real-Time Transport Protocol (RTP) to transport the fax data.

Cisco fax relay is configured on the VoIP dial peers that direct calls into and out of the packet network.Cisco fax relay can be configured under the H.323 and Session Initiation Protocol (SIP) call control protocols.

Try:

http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_configuration_guide_chapter09186a008053b50b.html

New Member

Re: Configuring CLID for FAX when main office number already add

Thanks for the reply. Its not the protocol were having issues with, let me try to explain in more detail.

On the outgoing dial-peers we have the command:

clid network-number 0886448580 (main office number)

but for each fax machine we'd like to present the actual fax number.

Re: Configuring CLID for FAX when main office number already add

Craig,

You can achieve this by using COR and multiple dial-peers outbound. Essentially you would apply an inbound dial-peer matching the ANI of your fax on your gateway. This inbound dial-peer would have an incoming cor-list. Then you would add another cor-list to your existing dial-peers, making sure they don't include the fax inbound cor. Then you would duplicate an outbound pattern with a cor-list the faxes can use. Here is an example below, assuming the Fax DN is 1000 with an e164 of 0886441000.

dial-peer cor custom

name faxnumber1000

name longdistance-nofax

dial-peer cor list faxnumber1000

member faxnumber1000

dial-peer cor list longdistance-nofax

member longdistance-nofax

dial-peer voice 1000 voip

description Inbound Fax dial-peer Fax DN 1000

incoming-called number 1000

corlist incoming faxnumber1000

dial-peer voice 11 pots

description Original Outbound LD dialpeer

destination-pattern 9T

clid network-number 0886448580

corlist outgoing longdistance-nofax

port x/x

dial-peer voice 12 pots

description Fax only LD dialpeer

destination-pattern 9T

clid network-number 0886441000

corlist outgoing faxnumber1000

preference 1

port x/x

COR will restrict the fax from ever using the dial-peer with the incorrect CLID. The preference on the fax dial-peer will prevent in most scenarios anyone else using it but you could also apply COR to the remainder of the router to 100% guarantee fax only usage of that dial-peer.

Here is a document explaining COR(note this will discuss how to set it up and not for using it as a workaround to your issue).

http://www.cisco.com/en/US/tech/tk652/tk90/technologies_configuration_example09186a008019d649.shtml

Please rate any helpful posts

Thanks

Fred

Re: Configuring CLID for FAX when main office number already add

Craig,

I just noticed checking this post again, the inbound dial-peer is wrong, it was looking for DNIS and not ANI. It should be like below.

dial-peer voice 1000 voip

description Inbound Fax dial-peer Fax DN 1000

answer-address 1000

corlist incoming faxnumber1000

Thanks

Fred

New Member

Re: Configuring CLID for FAX when main office number already add

Thanks Fred! It works!

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