Avaya Nortel Communication Server 1000 Manual page 77

HREG
The ACF call is HALF-REGISTERED (HREG). This occurs when one of the
telephones involved in the call is registered with the Call Server, but the other
telephone fails or is not connected to the Call Server. The CS ACF timer is
started only if the other party does not support disconnect supervision.
HREB
The ACF call is HALF-REBUILT (HREB). This is when no call-associated
data was found and the Call Server creates the data. HREB happens when
the first of the two telephones involved registers with the Call Server, while
another telephone is still not connected to the Call Server. When the far-end
telephone registers, the partially-rebuilt call is promoted to REBUILT state.
PREB
The ACF call is PARTIAL-REBUILT (PREB). This is when no call-associated
data is found. The far-end IP address is not known on the Call Server, or
the far-end IP address is translated to the virtual trunk TN or Voice Gateway
TN. The Call Server creates the data leaving the far-end TN undefined.
This scenario happens when:
•
•
The terminating-party TN in the PREB call is 0.
No signaling is passed to the far-end telephone involved in the HREG, HREB,
and PREB calls. This means any features that involve both parties do not work
with such calls.
REB
The ACF call is REBUILT (REB). This means the calls have both parties
available, but all call data except bandwidth and connected transducers is
lost.
LD 32 STAT command
If ACF information exists for the requested IP Phone, it is output as follows:
ACF STATUS <status> TMR <timer>
where <status> is:
•
•
Copyright © 2003–2008, Nortel Networks
.
the far-end telephone is a local telephone, but while it was registered
with the remote Call Server, the local Call Server was cold-started and
TN-to-IP address associations were lost.
the far-end telephone is a remote telephone.
UNREG for unregistered calls
HREG for half-registered calls
Nortel Communication Server 1000
IP Line Fundamentals
NN43100-500 02.02 Standard
Release 5.5 4 February 2008
Active Call Failover for IP Phones 77
ATTENTION