Pri Services And Features; Bri Services And Features - Nortel BCM50 Configuration Manual

538 Appendix C ISDN overview
Refer to the following features and services:
• "Network name display" on page 539
• "Name and number blocking (ONN)" on page 540
• "Call-by-Call Service Selection for PRI" on page 540
• "Emergency 911 dialing" on page 541
• "2-way DID" on page 541
• "Dialing plan and PRI" on page 541

PRI services and features

The services and features provided over PRI lines include:
• Call-by-call service selection (NI protocol)
• Emergency 911 dialing, internal extension number transmission
• access to Meridian 1 private networking (SL-1 protocol)

BRI services and features

The services and features provided over BRI lines include:
• data transmission at speeds up to 128 kbps per loop (depending on the bandwidth supported by
your service provider)
• shared digital lines for voice and data ISDN terminal equipment
BCM Basic Rate Interface (BRI) also support D-channel packet service between a network and
terminal connection. This allows you to add applications such as point-of-sale terminals (POSTA)
without additional network connections. 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 B channels 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, which is 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).
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