CPC Usage
Calling Party Category (CPC) values identify the type of network or device that originated the call. These values are included in the SIP URI and are primarily used for call routing, billing, and feature compatibility.
CPC Values
The following table lists the CPC values and their corresponding source types:
CPC Value |
Source Type |
|---|---|
|
Ordinary (standard landline) |
|
Cellular (mobile network) |
|
Payphone |
|
Unknown (unclassified source) |
Note
CPC values are supported only for toll-free numbers.
CPC in a SIP URI
CPC values are included in the SIP INVITE request to indicate the call’s origin. For example:
SIP URI: {DID}{CALL_CPC}@my.domain.com
Example of an incoming call to the DID 18553864279 with different CPC values:
Landline source: 123456789001@my.domain.com
Mobile source: 123456789002@my.domain.com
Payphone source: 123456789003@my.domain.com
Unknown source: 123456789004@my.domain.com
Additional Information
Create and configure SIP trunks for inbound calls, set transport protocols, authentication, media options, and more.
Understand how to configure trunk groups for failover and and load balancing.