[Serusers] Connect two GKs

[hwang at ecs.csus.edu]

I'm trying to connect 2 GKs.
Version 2.2.0 is used in both GK.
GK_A has an EP registed to it with alias 1001, GK_B has an EP registed
to it with alias 2001.
In GK_B, I set GK_A as Permanent EP like
[RasSrv::PermanentEndpoints]
192.168.2.218=GK_A;1
When I dial 1001 from 2001, I see an ACF from the status port, right
after that I get a DCF.
By tracing the log in GK_B, I get :
ProxyChannel.cxx(1984)  Q931 192.168.2.218:1720 DIDN'T ACCEPT THE CALL
where 192.168.2.218 is the IP for GK_A.
But in GK_A, nothing related to GK_B in the log.
Please help me to find out the problem.
Thanks.