ISDN calls limited to 56K? 1

[tconn]

I've got a tie trunk to my Lucent/Ascend TNT coming from my Definity. The calls coming in seem to fail if the calling tries a 64K call, 56K seems to work fine. Any ideas what might be limiting this? Both the inbound and the tie lines are ISDN PRI's. The Definity is the line side on the tie to the TNT.

 

[Dunstan]

Not all (as a matter of fact more are not)PRI's are set-up from the LEC to carry 64k....I would check with your carrier on your PSTN pri. Many carriers limit it to 56k unless you specified the need to carry Video etc when they were provisioned/provided by the carrier.

 

[tconn]

Is there any way to place a test call, even a call to myself, using a 64K data channel ?

 

[tconn]

TimeWarner says the PBX is sending a reject back when they try to make a test 64K call. Any other suggestions? G3 R11 btw..

 

[tconn]

Argg... I still have no idea why the PBX is rejecting the calls. Anyone?

 

[lopes1211]

What type of PRU is it? Local or LD? Who is the vendor? If local, who is the LD PIC?

-CL

 

[tconn]

Its a two-way PRI from TimeWarner Telecom. The PRI on the back side of the PBX is simply setup as a tie line with ISDN line-side signaling. This allows me to use my existing voice PRIs rather than buying seperate PRIs for the PBX and the dialup equipment.

 

[lopes1211]

To the best of my knowledge, only MCI, Sprint, and AT&T support 64K LD data calls via a voice PRI. If the PRI is a local PRI, try a dialing a pic for one of the big three like 1010att. If that is success you'll still need to setup an SDS account with whichever of the big 3 you choose to utilize for SDS. IMHO Sprint seems to be the least painful to get setup with.

-CL

 

[tconn]

Its an inbound call.. No pics involved.

 

[lopes1211]

On the route pattern that you are using to send the calls to the Ascend, do you have ITC set as "bothept" instead of "rest"?

BCC VALUE TSC CA-TSC ITC BCIE Service/Feature BAND No. Numbering LAR
0 1 2 3 4 W Request Dgts Format
Subaddress
1: y y y y y n n bothept none

-CL

 

[tconn]

No.. ? Should I??
I have:
y y y y y n n rest _ _ _ none

 

[lopes1211]

Yes, the "rest" is restricted 56K. That should fix the issue. "bothept" will allow 56K and 64K. Smells like a star if it works.

-CL

 

[tconn]

That worked! Like a champ...