Apparatus and method for using multiple call controllers of voice-band calls

  • US 7,460,520 B2
  • Filed: 06/18/2003
  • Issued: 12/02/2008
  • Est. Priority Date: 11/20/2002
  • Status: Expired due to Fees
First Claim
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1. An apparatus connecting a local packet network (LPN) and a circuit-switched network, the apparatus comprising:

  • a first protocol endpoint configured to receive at least one first external call control message of a first protocol from a first call controller associated with the circuit-switched network and to map the at least one first external call control message to at least one corresponding first internal call control message of an internal protocol;

    a second protocol endpoint configured to receive at least one second external call control message of a second protocol from an integrated access device (IAD) associated with the LPN and to map the at least one second external call control message to at least one corresponding second internal call control message of an internal protocol; and

    a protocol adapter configured to receive the first and the second internal call control messages and to route the at least one first internal call control message to the second protocol endpoint and the at least one second internal call control message to the first protocol endpoint;

    wherein the first protocol endpoint is further configured to receive the at least one second internal call control message and to map the at least one second internal call control message to a third external call control message of the first protocol, andwherein the second protocol endpoint is further configured to receive the at least one first internal call control message and to map the at least one first internal call control message to a fourth external call control message of the second protocol.

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