SIP fax server question

[TN94z]

We have a 7.6 CS1000M with Session Manager 6.3. We have been tasked with working with a 3rd party vendor to implement a SIP fax server. We have gotten the inbound, internal, and long distance faxes working successfully. When the server tries to send a local fax, it fails. It looks like their server never receives an RTP stream coming from our side when dialing local. The only difference between local calling and long distance calling is the fact that our local route hits copper trunks first and then goes to digital trunks.

Is there some setting in the copper trunks that I am missing that is denying these calls? Or is it most likely a CO issue? We have one other piece of equipment that has a dedicated PRI and when I forced these local fax calls down these trunks, it worked just fine. But this isn't a long term issue as this dedicated PRI is used on a disaster, Code D server. We cannot tie those trunks up with faxes.

I have done SM traces and entc on the PBX to verify all of this. I did have to do an adaptation on this entity to turn MIME support off before the inbound faxes TO the server would work.

Any thoughts?

 

[TN94z]

What if we had him prepend, for example, 1234 to all of his local calls. I then add a dial pattern in session manager to match the 1234xxxxxxx that sends it to the PBX. Then I add an SPN with the 1234 and a DMI that strips it and sends it to the local PRI RLI??

 

[TN94z]

Well, after further investigation, another server that is in production today actually sends out 10 digits and hits the LD route which is not what we thought was going on based on the configuration. So, I am just going to send this server out the LD as well and have the users just dial 10 digits for everything. That will be the simplest resolution.