摘要:
A method and apparatus for permitting a wireless telecommunicat-ions caller to use an alternate service provider if the primary service provider has no available bearer channels. If the primary service pro-vider has no available bearer channels for a call, that service provider sends a message to the caller's mobile station to switch its control channel to one of the control channels of an alternate service provider. The caller then attempts to complete the call over the facilities of the alternate service provider. Advantageously, spare facilities of the alternate service provider can be employed to good use; advantageously, the caller's service is improved because the call is not finally blocked when no bearer channels are available for the call.