Abstract: A method for routing calls in a packet-based network includes receiving a call request at a first call manager from a device that is coupled to the packet-based network. The call request includes a telephone number associated with a plurality of telephony devices that are coupled to the packet-based network and that are controlled by a number of call managers. The method also includes determining a line control process associated with the telephone number that is included in the call request and communicating the call request to the line control process. The method further includes determining a device process controlling each telephony device that is associated with the telephone number included in the call request and communicating the call request from the line control process to the device processes.

Abstract: A call manager receives a call setup request for a Voice over Internet Protocol (VoP) call from a phone having an associated call originator. The call manager then determines whether sufficient bandwidth exists for the VoP call over a link using a bandwidth table. If insufficient bandwidth exists on the link for the VoP call, the call manager presents a plurality of call completion options to the call originator. One of the call completion options is a public switched telephone network (PSTN) option. In response to the selection of the PSTN option, the call manager routes the VoP call over a PSTN.