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New Member

CallManager 6.1 SIP trunk to sr140 -brooktrout

Trying to get a sip trunk in 6.1 to talk to a brooktrout sr140 (rightfax) card. Have the sip trunk built in CCM and on the sr140 however we only get fast busy. Can anyone provide a link to a setup or troubleshooting doc, or provide some guidance if you have set this up. Thanks

19 REPLIES

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

do you have any route patterns point to go across the sip trunk?

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New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

yes. we have route patterns setup pointing to the trunks. its almost like the trunk is not active (but no way to tell)

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

I would make a test call, note the timestamp and collect the trace file, and see, if callmanager tries to set up the call via the trunk.

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New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

steelcity39,

Any luck configuring this? I am about to start this same project.

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

no luck yet. did you find a working solution using SIP?

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

Yes! I had to add translation patterns specific to the DID's for the Rightfax server. Let me know if you need help.

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

did you use SIP or H323?

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

This may be helpful for you.

-nick

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

thank you.

some questions:

do we need to use H323 or can we use SIP?

also, since the DID's are coming in on our MGCP controller gateways, do we need to allow t38 on those gateways?

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

We used SIP. We had to be sure the "Fax Relay" package was installed on our gateway.

When you do a sh run, do you see the "no mgcp package-capability fxr-package" line? If it is missing, then the fxr-package is enabled. If it is still there first try:

Log into the gateway, then issue the following:

conf t

no mgcp

mgcp

This will force the gateway to reset again. Maybe something happened and the reset from CallManager didn't do anything. If the package is still not correct, then enter the following:

conf t

mgcp package-capability fxr-package

no mgcp

mgcp

exit

Now check again to be sure it's missing. *One note, our IOS version had a bug. When I installed the Fax Relay package and reloaded the gateway, it reverted back to no package being installed, even though I had saved it.

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

did you need to do anything for the SIP trunk besides setup the trunk in CCM and then setup the sr140 for sip pointing to the IP of the CCM server?

I have the trunk built and a route pattern pointing to the rightfax server, however when I call it goes right to fast busy. looks like the sip trunk is not active..

thanks for your help

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

is the fxr package installed no your VG?

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

yes its there

the problem we are having it with the sip trunk itself. we are trying internal calls (from phone to the rightfax) and get immediate fast busy.

here is what we did:

built sip trunk in the CCM to the ip address of the rightfax machine.

created routepattern to point to the sip trunk.

translated numbers to point to route pattern.

when we call the numbers, we get immediate fast busy.. no answer..

any suggestions?

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

how many digits is the carrier passing to you. That will determine how your translation patterns need to be set.

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

carrier is passing us 10 digits.

we take the 10 digits and translate to a 4 digit route pattern that is pointed to the sip trunk.

from what i can tell, we either need a route pattern to tell CCM where to send the call .. there is no way to tell CCM to send the call to the sip trunk using just a translation pattern.

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

We also have carrier passing 10 digits. To get ours to work, we created translation patterns for each range of DIDs:

(areacode)229.33xx

that "dot" is important. At the bottom of the TP, we configured the "discard digits" to "PreDot".

Then our 4 digit route patterns worked.

Also make sure your SIP config is using UDP for SIP Trunk Security Profile.

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

Entirely confused - you say you used SIP but this is all MGCP configuration?

-nick

New Member

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

the mgcp configuration is for the fax relay package, to allow the fax traffic thru to my UCM. From UCM I have same network SIP to Rightfax.

Re: CallManager 6.1 SIP trunk to sr140 -brooktrout

I see, MGCP for PSTN, SIP to Rightfax.

MGCP T38 is hard to configure recently, due to some bugs.

Notably:

CSCta26864

CSCsy29533

CSCsw39039

CSCso69794

Basically - only 12.4(22)T is safe.

You need 'no mgcp fax t38 inhibit' and 'mgcp package fxr', and to reset the gateway. Make sure there aren't slips, and you should be set for T38.

-nick

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