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IU 4350 Converged Network Appliance
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Type of Events
The events that may currently be listed in the activity monitor are as follows:
• Bandwidth change - the endpoint requested a change of the bandwidth
used for its call, only sent if the bandwidth management is enabled.
• Call Setup – Only sent if the call was ‘successfully’ established. A call is
successfully established if the H.245 media negotiation connection was
established.
• Call Termination – Sent when a call terminates. You can have a call
termination event without a call setup event, for example, a failed call that
doesn’t reach the H.245 established state will not cause a call setup event,
but only a call termination event.
• Registration Reject – Sent when a registration was rejected. This includes
the authority that rejected the registration (our side or the gatekeeper (only
in WAN GK mode) as well as a text reason for the rejection.
• Gatekeeper reachability changed (only in WAN GK mode). Gatekeeper
status toggled from reachable to unreachable or vice versa.
• Location Request – Received a location request from a neighboring
gatekeeper.
• Location Confirm – Sent, or forwarded, a location confirm to a previous
request.
• Location Reject - Sent, or forwarded, a location reject to a previous
request.
Call Status
The call status shows the last state of the call at the time of the event. Each call
progresses through a number of states when being established. If a call fails,
the call-status in the call termination event can help trouble-shoot the cause of
the call failure. For example, if the call fails at the “Caller/Callee admission
request received” state, there may be a problem communicating with the
gatekeeper, whereas if the call fails at the “Attempting to establish outgoing
Q.931 TCP connection” state, the remote endpoint may not be reachable.
The following are call status messages:
• “Caller admission request received”
Received an admission request from the source endpoint and forwarded it to
the gatekeeper.
• “Caller admission response received”
Received an admission response (either confirm or reject) from the gatekeeper
and forwarded it to the source endpoint.
• “Incoming Q.931 TCP connection established”
Received an incoming Q.931 TCP connection from the source.