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Switching to Integrated Voice/Data Circuit with PRI Handoff with Cisco UC540

Posted on 2013-05-18
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Last Modified: 2013-07-12
Hi,
With our UC540, we have just used an "old" PRI that has been in place for ages plugged into a VWIC2-2MFT-T1/E1 that we have in our UC540. Configured the PRI settings and it's worked fine.

And the data /WAN portion was a separate connection.

We are now switching to an integrated voice/data circuit (IP Flexible Reach by AT&T) but we won't use the data for now, sometime in the future we may use it in our firewall as a redundant connection but that's TBD.

What I'm concerned about now is the connection specifics from the AT&T ISR to the UC540 for the PRI network cable. The circuit comes into AT&T's Cisco 2900 Series as one connection and then their ISR splits off the data and the PRI for us, and provides the separate PRI connection.

What will be required physically to connect to the UC's VWIC2-2MFT-T1/E1 port, just connect the PRI cable from AT&T's ISR?

Should there be anything special we need to do configuration wise with the new PRI?

15.1(2)T4 (IOS), 8.20 (UC540 Software Pack)

Thanks
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Question by:jbridges9
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Expert Comment

by:arnold
ID: 39178728
Double check the requirements from the AT&T circuit to the one you currently have.
You may have to just adjusts minimal handoff configurations.

Presumably the 2900 router will handle the sip trunk to AT&T versus having the uc540 have the SIP trunk configuration within the E1T1 configuration.

Are you using CCA or cli to manage your system?
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Author Comment

by:jbridges9
ID: 39182199
Will get the info on current ckt and check one against the other, thanks.

The AT&T (2900 series) will handle the handle the PRI handoff. The UC isn't configured now and will not be with the new, configured for SIP Trunking, solely voice with PRI and DIDs.

Unless the conversion from PRI back over to combined service circuit is considered SIP?

I use a combination of CCA and CLI or manage the system.

Thanks!
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arnold earned 500 total points
ID: 39182487
I believe UC540 includes a SIP trunk functionality to AT&T as one of the providers.  The question is whether you want the UC540 to be the one on which the circuit terminates and then feed the LAN or have the 2900 handle the T1 termination with the SIP Trunk and PRI Handoff to the UC540.

The information you get will deal with whether the b8zd EFS between the second Serial port on the 2900 and the E1T1 port on the UC540 what you need.
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