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C-1

Appendix C

Ordering ISDN Lines in the United States

ISDN Basic Rate Interface (BRI) Lines

When ordering ISDN BRI lines for use in the United States, note the following:

• Conﬁgure the B1 and B2 channels for data only.

• Conﬁgure the D channel for signaling only.

Table C-1 lists the parameters to set for AT&T 5ESS switches. Table C-2 lists the

parameters to set for Northern Telecom DMS-100 switches. Your phone company

might ask you to provide this information when you order your BRI lines.

Table C-1. BRI Parameters for AT&T 5ESS

Parameter Value Notes

Terminal Type A

Number of CSD 2

Number of CSV 0 or 1 1 if an ISDN phone was connected to the

S/T bus

Number of call appearances 1

Display is Y/N No

Ringing/Idle Call

Appearances

Idle Default for terminal type A

Autohold is Y/N No Default for terminal type A

Onetouch is Y/N No Default for terminal type A

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