Method and system for converting session initiation messages

A system, comprising:

• a) a data structure for storing associations between:
• i) a plurality of interface modules;
• and
• ii) device characteristics associated with a plurality of devices capable of initiating communication sessions over a packet-based network;
• b) a processing entity operative for:
• i) detecting a characteristic associated with a given device, the given device attempting to initiate a communication session over a packet based network via a session initiation message generated according to a particular session, initiation protocol;
• ii) accessing the data structure for determining, at least in part on the basis of the characteristic of the given device, a given interface module from the plurality of interface modules;
• iii) causing the first session initiation message generated according to the particular session initiation protocol to be processed by the given interface module for converting the first session initiation message into a second session initiation message generated according to a pre-determined session initiation protocol.

A network entity, comprising:

• a) an input for receiving from a given IP communication device, a session initiation message for initiating a communication session over a packet based network via a session initiation message generated according to a particular session initiation protocol;
• b) a processing en operative for:
• i) detecting a characteristic associated with the given IP communication device;
• ii) determining, at least in part on the basis of the characteristic associated with the given IP communication device, a given interface module from a plurality of interface modules for processing the session initiation message generated according to the particular session initiation protocol;
• iii) causing the first session initiation message generated according to the particular session initiation protocol to be processed by the given interface module for converting the first session initiation message into a second session initiation message generated according to a pre-determined session initiation protocol.