Using the Call-by-Call (CBC) Service Selection feature, a single ISDN trunk group can carry calls to several services. Call-by-Call Service Selection eliminates the need to dedicate each trunk group to a specific service. With Call-by-Call Service Selection, you can set up various voice and data services and features for a particular call.
Call-by-Call Service Selection provides the following benefits:
Cost reduction. Since many services share the same trunks, this feature can reduce the total number of trunks that you must use.
Improved service. Features and services are less likely to be blocked.
Simplified networking. This feature simplifies network engineering. Instead of a per-service basis, you can analyze trunking needs based on total traffic.
Tracking. Call-by-Call Service Selection calls are measurable.
