• I have a central Freeswitch server
• at a remote location we have a minimum Freeswitch server which handles local registrations of local phones. This remote Freeswitch acts as a B2BUA via VPN to the central server (in order to eliminate NAT and Network issues and encrypt traffic to the remote site)
  
• With the remote Freeswitch we can easily handle presence (BLF) at the remote site, as all phones are local.
  
• In this B2BUA scenario, for every remote phone the remote freeswitch is registering the same phone number to the central Freeswitch, which handles some other phones, which are connected to the central Freeswitch directly.
• What we want to achieve is, that a phone behind the remote Freeswitch can do BLF with another phone which is directly connected to the central Freeswitch

[Central Freeswitch] <=== registers 200 ===== [remote Freeswitch] <=== registers 200 =====[phone 200]
                     |<=== registers 201 =====[phone 201]

So in terms of this short drawing the phones 200 and 201 need to share presence.
So the main question is: How can I pass the presence information of 201 from the central Freeswitch through the remote Freeswitch  to phone 200 and vice versa?

Is there a way t do that and how could one do that?

-- 
With kind regards
Peter Steinbach 

Telefaks Services GmbH
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