Abstract: In one embodiment of the invention, either a CPRU or an RNC in a wireless local loop performs digit analysis to identify whether an emergency 911 call is in progress by setting an internal indicator. When the emergency 911 caller goes on-hook during an emergency call, the CPRU will direct a re-alert of the emergency caller should the internal indicator indicate that the call is an emergency 911 call. In an alternate embodiment, digit analysis is only performed at a CO in a telephone network coupled to the wireless local loop. When the emergency 911 caller goes on-hook during an emergency call, the wireless network places itself into a pending disconnect state, thereby allowing the CO to direct a re-alert of the emergency caller.

Abstract: A method of communicating FSK-modulated Caller ID signals through a network incompatible to the transmission of these signals is presented. A first network component couples between the incompatible network and a Central Office, and a second network component couples between the incompatible network and the telephone. In one embodiment, the call flow proceeds until the second network component would ring the line of the called party. The second network component seizes the line but does not apply a ringing signal. The second network component continues with the call flow as though the second network component had entered the silent interval after the first ring cycle at the called party. Subsequently, the CO transmits the FSK Caller ID information to the first network component which detects the FSK transmission and converts it into an out-of-band message and transmits the out-of-band message over the incompatible network to the second network component.