Patent ID: 7185091

Claim:
A method of facilitating communications at a proxy in a network comprising: receiving a message from a mobile unit having a contact address; establishing a contact alias associated with the mobile unit and the contact address, the contact alias substantially containing the contact address; intercepting and identifying at the proxy at least one signaling message from a server directed to the mobile unit that includes the contact address for a session directed to the mobile unit; compressing the at least one signaling message that includes the contact address; routing the compressed at least one signaling message to the mobile unit with the contact address; intercepting and identifying at the proxy at least one later signaling message from the server directed to the mobile unit, wherein the intercepting and identifying at the proxy the at least one later signaling message further comprises identifying the at least one later signaling message for the session directed to the mobile unit using the contact alias; determining whether there is a need to route a message corresponding to the at least one later signaling message to the mobile unit; when it is determined that there is the need to route the message corresponding to the at least one later signaling message to the mobile unit: compressing the at least one later signaling message, and routing the compressed at least one later signaling message to the mobile unit; and when it is determined that there is not the need to route the message corresponding to the at least one later signaling message to the mobile unit: not routing the message corresponding to the at least one later signaling message to the mobile unit, and responding to the at least one later signaling message.