What is Call Watch?

The Call Watch feature supports troubleshooting and diagnostics by collecting real-time quality data from selected VoIP conversations and presenting it in the Call Watch Overview. This feature is distinct from the core monitoring functionality that UC Monitor provides, which is largely passive monitoring of VoIP-related data.

To enable the Call Watch and investigations features, a UC Monitor user account must have an associated role with the appropriate privileges, which an administrator assigns.

Call Watch provides an extra layer of call quality monitoring and can gather more data from a potential problem area to use in troubleshooting. If a user complains of poor call quality, for example, you can initiate a Call Watch for the phone to collect more performance data. In the resulting Call Watch Overview, you notice patterns in the measurements that can help you resolve the underlying problem.

A Call Watch actively polls the selected phone. During a Call Watch, the collector uses HTTP to collect in-progress call performance data from the web page of the phone. The HTTP query occurs every 15 seconds during the watch period when a call is active. An analog or PSTN telephone can also be watched. UC Monitor uses SNMP to query the MIB of the voice gateway that routes PSTN calls.

The collector gathers the following information from a watched IP phone, or from a voice gateway device for a watched PSTN telephone:

Origination time
Origination phone, destination phone
Delay to dial tone
Post-dial delay
MOS
Packet loss
Jitter buffer loss
Latency
ACOM and ERL, when collected from the gateway for a PSTN call
Signal in and signal out, when collected from the gateway for a PSTN call
Concealed seconds, severely concealed seconds

Call Watch is specially designed for troubleshooting a reported problem with call setup or call quality.

This section contains the following topics:

How to Use Call Watch

Call Watch List

Create a Call Watch Definition

Call Watch Limitations