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Originally Posted by pmealey
I have purchased a TN556C to provide BRI circuits to a Polycom video conferencing system and I have received conflicting information from the reseller that I bought the card from and the video conferencing system vendor. My question is, do I need to talk to my PRI provider about anything? For example, do they need to do any programming changes, give me some additonal DID numbers, pass different digits when I receive a call on the ISDN #, etc.?
FYI: I have a full T1 PRI with a block of 100 DID numbers assigned to it.
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Two part question, reverse order and in three parts. ;)
a) The PRI you reference is local telco service, correct? If this is the case the availablity of DID numbers only applies if you plan to be able to accept calls into your Polycom. If you will only make outgoing calls, you can safely use internal extentions when provisioning the BRI connecting to your Polycom.
b) Follow liquidvw's instructions and contact your LSP. Unless things in the CO world have changed since I worked for telco, a North America PRI is usually provisioned B8ZS/ESF and is provided voice AND data switched service capability. The B8ZS part is essential as it will give you 64K clear channel service - the data part is absolutely required to ensure that your calls will be delivered... in the ISDN world there are three basic types of service that can be called when setting up a call - 3.1 Khz voice, 56K voice, and 64K data. 3.1 Khz is POTS grade, 56K is best for modems. 64K is used for data calls - the type used for switched videoconference calls. If your PRI is not set for data service, any inbound calls would be rejected with a 'service not available' cause code being returned to the caller. It would also prevent you from making them for the same reason.
c) Contact your LD vendor as well, if you plan to make any LD voice conference calls (especially if you plan to call inertnational!) Depending on how your LD's network is set up, you may also need to prefix a specific PIC code (using 1010xxxx) to ensure you hit your carrier's all-digital network, as well as registering the number. For example, Cable and Wireless used to use ANI to filter access; while AT&T, MCI, and even Sprint used to have a separate PIC. (That was more than a few years ago, though, and things may have changed.)