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48
Chapter 7 ISDN
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).
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.
Service provider features
BCM supports the following ISDN services and features offered by ISDN service providers:
•
D-channel packet service (BRI only) to support devices such as transaction terminals.
Transaction terminals are used to swipe credit or debit cards and transmit the information to a
financial institution in data packets.
•
Calling number identification (appears on both BCM sets and ISDN terminal equipment with
the capability to show the information).
•
Multi-Line hunt or DN hunting which switches a call to another ISDN line if the line usually
used by the Network DN is busy. (BRI only)
•
Subaddressing of terminal equipment (TE) on the same BRI loop. However, terminal
equipment which supports sub-addressing is not commonly available in North America. (BRI
only)
Transmission of B-channel packet data using nailed up trunks is not supported by BCM.
Contact your ISDN service provider for more information about these services and features. For
more information about ordering ISDN service in North America, see
page 52
and
"Ordering ISDN BRI" on page
N0060609 0.3
N0060609 0.3
52.
"Ordering ISDN PRI" on
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