Can I use my own Custom CLI (Calling Line Identifier) with Sinch Voice API?

Calling Line Identifiers (CLI) can be used in conjunction with a purchased DID (Direct Inward Dialling service) from the Sinch Build Dashboard to show as an incoming number on a voice call.  If we do not have a DID in your region, then we can acquire one for you. Please get in touch.

Migration of customers' existing DIDs is also an option, please contact Sinch support if that is your case.
 

App to phone call setting CLI

• Android SDK
• iOS SDK

Further Resources

• SIP calls
• PSTN calls.