atcomsystems.ca/forum Forums TDM Business Telephone Systems Comdial Telephones & Systems Adding T1 with PRI in an existing DXP

If you are just going to put in a T-1 you should be good. The T-1 support came in on Release 7.

The PRI/ISDN does not come in until release 11A.

You will also need to upgrade your DXRAM card to a DXRAM-EXPC rev.a or later. If you upgrade to 11A.

Either one of these you should be able to program with procomm or hyper term.

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