Hey can any one answer this I want SER to act as a sip proxy for TCP as well as UDP. UA -------tcp/udp------- SER ----tcp------- LCS (TCP) | |_____udp____ Asterisk (UDP) Also the SER should be able to take a udp request and change it to tcp and send it out or vice versa Can I do this ???? I am sure one of you have faced this problem and have doen something Please share with me your thoughts. thanks Dipen K Gala Fidelity Investments System Company - Telecom Phone: (617) 563-2729 Email: Dipen.Gala(a)FMR.com