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Appendix B: ISDN Overview 387

P0911588 Issue 01 Enterprise Edge 2.0 Programming Operations Guide

The ISDN terminal equipment (TE) on the loop is also programmed with its ISDN

DN.See theinstructions that come with the ISDNdevice for informationabout how

to program it to recognize its assigned DN. Most devices will require both a

terminal service profile identifier (terminal SPID) and a DN, and some will require

two terminal SPIDs and two ISDN DNs. The SPID used with the device should not

be confused with a SPID used for network connections using a T loop.

To create a terminal SPID for a device, add at least two zeros to the end of the of

the ISDN DN. Add more zeros to the beginning or end of the ISDN DN until you

have the length of SPID required by the TE. For example, if an ISDN telephone

requires a six-digit SPID and has a DN of 667, its SPID is 066700. If the same TE

requires a minimum of ten digits, the SPID is 0000066700.

Most ISDN terminals require a five-digit SPID. An ISDN PC card usually requires

a ten-digit SPID. Follow the directions that come with the ISDN device to program

it with a SPID and ISDN DN.

D-packet service (BRI only)

The D-packet service supplied by the Enterprise Edge system supports a point-of-

sale terminal adapter (POSTA). Connecting a POSTA allows transaction terminals

(devices where you “swipe” credit or debit cards) to transmit information using the

D channel of the BRI line, while the Bchannels of the BRI line remain available for

voice and data calls. A special adapter links transaction equipment (such as cash

registers, credit card verification rigs, and point-of-sale terminals) to the X.25

network, a data communications network designed to transmit information in the

form of small data packets.

To support the D-packet service, your ISDN network and financial institution must

be equipped with a D-packet handler. To convert the protocol used by the

transaction equipment to the X.25 protocol, your ISDN network must also be

equipped with an integrated X.25 PAD which works with the following versions of

X.25: Datapac 32011, CCITT, T3POS, ITT and API. The ISDN service package

you order must include D-packet service (for example, Package P in the United

States; Microlink™ with D-channel in Canada).

Your service provider supplies a Terminal Endpoint Identifier (TEI) and DN to

support D-packet service. The TEI is a number between 00 and 63 (in Canada, the

default range is 21-63). Your service provider may also supply you with a DN to

program your D-packet device. The DN for D-packet service becomes part of the

dialing string used by the D-packet to call the packet handler.

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Avaya BCM 2.0 Programming Guida Utente Pagina 387