[ns] IMS support on ns-2 ?

Hi, somebody knows if there is some implementation for 3GPP IP Multimedia Subsystem (IMS) on ns-2? i'll appreciate some information about thanks -- Ing Pedro Alonso Chaparro Valero Ciudad Politecnica de la Innovación iTEAM - Mobile Communications Group Polytechnic University of Valencia C\

[ns] IMS support in NS-2

Dear NS-2 users, I would like to know if there is any support for the 3GPP IP Multimedia Subsystem (IMS) in NS-2. If you know any implementation of IMS in any other simulation tool please let me know Thank you very much for your time, Yours sincerely. Michael Sidiropoulos