Summary

Qiw.com

• ISDN PRI is typically used to aggregate multiple BRIs or for higher-bandwidth requirements.

• ISDN PRI (T1) total speed is 64 kbps x 23 (B channels) + 64 kbps (D channel) + 8 kbps (framing and synchronization) = 1.544 Mbps.

• ISDN PRI (E1) total speed is 64 kbps x 30 (B channels) + 64 kbps (D channel) + 64 kbps (framing and synchronization) = 2.048 Mbps.

• ISDN PRI requires that a T1 (or E1) controller be configured.

• A T1 controller configuration must include the framing type and line coding.

© 2004 Cisco Systems, Inc. All rights reserved. bcran v2.1—6-9

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