[Serusers] Mediaproxy | none of caller or called party is local

Hello List, I am trying to set up the following senario - [kphone A]-----------[ser/mediaproxy A]---------------------[ser/mediaproxy B]-----------[kphone B] When I try to set up a call between the two ends, proxydispatcher complains that "none of the caller or called party is local. will not use mediaproxy". I am not using DNS SRV at the moment - instead will be using the default unix socket. Kphone A and B are registered respectively to ser/mediaproxy A and B respectively. Anybody has any hint where this thing might be failing? I tried to go through the code - but python is not one stronghold. How does the dispatcher decide whether "caller or called" party is local? Thanks for your help, Dhiraj Bhuyan Network Security Specialist, BT Exact Business Assurance Solutions Tel: +44 1473 643932 Mob: +44 7962 012145 Email: dhiraj.2.bhuyan(a)bt.com