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Caller ID
Description
Caller ID is a service that transmits caller information to the called party’s device, allowing
the callee to know who is calling before deciding whether or not to answer a call.
Getting Started
The Caller ID feature is available by default on the UCM. To use it:
1. Make sure that either that the trunk, extension, or the UCM itself has a CID
configured in their corresponding configuration pages.
2. UCM’s Outbound CID priority is as follows:
Keep Original CID >>> Trunk CID (Keep Trunk CID enabled) >>> DOD >>> Extension
CID >>> Register Trunk Username (Keep Trunk CID disabled) >>> Global Outbound CID.
Using the Service
Assuming the following:
• A is an extension registered to UCM 1.
• B is an extension registered to UCM 2.
• A has CID number “1000” and CID name “John Bob”.
• UCM 1 is peered with UCM 2.
• UCM 1’s peered trunk has CID number “123” and CID name “GS”.
• UCM 2’s peered trunk has Keep Original CID enabled.
The service can be used as such:
1. A calls B.
2. B’s endpoint rings and displays A’s CID number “123” and CID name “GS”.
Due to CID priority, UCM 1’s CID information overrides A’s CID information.
Because UCM 2 enabled Keep Original CID, UCM 1’s CID information was preserved and
passed along to B.
Miscellaneous
Some countries may not include CID information in calls over analog lines, potentially
resulting in call failures when the UCM tries to look for the information in incoming calls.
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