Calls

Can I use my company name or a custom name as caller ID instead of a number?
Some hard phones, softphones, and phone numbers are capable enough to display the caller’s name on screen during an incoming call. You can setup a caller na...
Can I setup CNAM for all my Plivo phone numbers?
You can set up CNAM only for US Plivo numbers because CNAM database is available only in the US currently. Not all US Plivo numbers support this feature. ...
Why am I getting calls from unknown/anonymous numbers?
If you get inbound calls from UNKNOWN, ANONYMOUS, UNAVAILABLE, etc. which doesn’t look like real numbers, it means that the originating carrier for a specif...
Can I limit my application to not make calls or not send SMS to certain countries or prefixes?
You can limit your Calls/ SMS to certain prefixes by following below instructions, below example shows how to allow calls & SMS only to the US. Belo...
How do I know whether my application is causing an issue?
While triggering an API request for outbound call/SMS or when the application is executed during an inbound call/SMS if you face any 4XX error or 5XX erro...
Can I make an outbound call to the SIP URI of a Plivo application?
You can find the SIP URI of your application by following below steps, Log in to your Plivo account. Click on the Applications tab. You will fi...
What is PreAnswer? How accurate is it?
The PreAnswer element answers the incoming call in early media mode. This is useful when you want to play custom caller tunes or to speak specified text dyn...
How do I determine the cause for a call hangup?
Hangup cause and hangup source information for every call is available in the Call Detail Record (CDR) of the call.  CDRs can be accessed via API and th...
How do I cancel a queued outbound API call?
You can cancel queued outbound calls using the Hangup A Call API.   Simply trigger the Hangup API with the Request UUID that was generated for the queue...
Does Plivo cache audio files specified in <Play> XML and Play API?
Plivo caches audio files specified in <Play> XML and Play API based on standard Client-Side Caching directives for RESTful communication over HTTP. ...