[cisco-voip] h323 call transfer

[carlo]

Hi all,
I'm trying to test  H323 call transfer in a  Cisco  Voip network  using 
an AS5400 as a gateway for the interconnection to the PSTN , a 3745 
Cisco router as a gatekeeper  and a Call manager CME 3.1 for the 
interconnection of some customers.
Each of  my customer is interconnected to my network  with a non Cisco 
CPE H450.2 and H450.3 compatible (registered on the 3745 gatekeeper) or 
with Cisco ATA 188 under a centralized CME 3.1
My aim is to use the transfer capabilty for each type of call transfer, 
also VoiP to Voip, for call originated and terminated in my network.
I need some configuration example for AS5400, 3745, CME 3.1 to implement 
call-transfer..

Thanks

carlo