[OpenSIPS-Users] Multiple Presence Servers

[James Lamanna]

Hi,
I'd like to know if it is possible to have multiple presence servers.
The idea is to distribute SUBSCRIBE messages around so that each
presence server is aware of all subscriptions.
However, it seems as though there is a problem with the to_tag when
doing this since it is used as a matching mechanism.
When we have subscription renewals from a phone, it transmits the
to_tag of the server it was registered with initially.
This server then tries to distribute the SUBSCRIBE to the other
servers. However, because each server generated its own to_tag
with the initial SUBSCRIBE, each server returns with a 481
Subscription Not Found.

Is there any way to work around this issue?

Thanks.

-- James