Recording Overview
Call recording is a Unified Communications Manager feature that enables a recording server to archive agent conversations. Call recording is one of the essential features in call centers, financial institutions and other enterprises. The call recording feature sends copies of the agent and the end-user media streams to the recording server over a SIP trunk. Each media stream is sent separately in an effort to best support a wide range of voice analytic applications.
Unified Communications Manager offers IP phone-based or network-based recording.
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In IP phone based recording, recording media is sourced from the phone. The phone forks two media streams to the recording server.
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In network-based recording, recording media can be sourced from either the phone or the gateway. When you implement network-based recording, the gateway in your network must connect to Unified Communications Manager over a SIP trunk.
Unified Communications Manager supports call recording in both single cluster and multi-cluster environments and offers three different recording modes:
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Automatic Silent Recording—Automatic silent recording records all calls on a line appearance automatically. Unified Communications Manager invokes the recording session automatically with no visual indication on the phone that an active recording session is established.
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Selective Silent Recording—A supervisor can start or stop the recording session via CTI-enabled desktop. Alternatively, a recording server can invoke the session based on predefined business rules and events. There is no visual indication on the phone that an active recording session is established.
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Selective User Call Recording—An agent can choose which calls to record. The agent invokes the recording session through CTI-enabled desktop, or by a softkey or programmable line key. When selective user call recording is used, the Cisco IP phone displays recording session status messages.
Recording Media Source Selection
When you configure network-based recording, you must configure either the phone or the gateway as your preferred source of recording media for the agent phone line. However, depending on your deployment, Unified Communications Manager may not select your preferred choice as the recording media source. The following table displays the logic Unified Communications Manager uses to select the recording media source.
Preferred Media Source |
Media Type |
Gateway in call path? |
Selected Media Source |
---|---|---|---|
Gateway |
Unsecure (RTP) |
Yes |
Gateway |
No |
Phone |
||
Secure (sRTP) |
Yes |
Phone |
|
No |
Phone |
||
Phone |
Unsecure (RTP) |
Yes |
Phone |
No |
Phone |
||
Secure (sRTP) |
Yes |
Phone |
|
No |
Phone |
Alternate Recording Media Source if the First Choice is Unavailable
If the recording media source that Unified Communications Manager selects is unavailable, Unified Communications Manager attempts to use an alternate source. The following table shows the logic Unified Communications Manager uses to select an alternate source for recording media.
Selected Media Source |
Gateway Preferred |
Phone Preferred |
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First attempt |
First gateway in call path |
Phone |
Second attempt |
Last gateway in call path |
First gateway in call path |
Third attempt |
Phone |
Last gateway in call path |