General

How do I increase the capacity of my Zentrunk SIP Trunk?
There are no limitations on number of concurrent calls that you can make using Zentrunk. Zentrunk servers are elastic in nature. These servers can scale up...
Is Plivo’s Zentrunk really Secure?
Your calls can securely connect with IP Authentication and credential based validation. Zentrunk offers Transport Layer Security (TLS) for signalling encry...
Does Plivo provide SIP trunking?
Yes. Plivo has a SIP trunking service called Zentrunk. Zentrunk is a cloud-based SIP trunking service that facilitates IP-PBX communications to PSTN and mo...
Does my Zentrunk SIP Trunk support SIP OPTIONS PING?
Currently, you cannot send SIP OPTIONS PING to Zentrunk SIP Trunks.
Does the Zentrunk SIP URI work with my soft phone (e.g., X-Lite)?
Yes. Zentrunk SIP URI can be used to make calls from any soft phone. To achieve this, create an account on a soft phone (say X-Lite) uncheck “Register wit...
What are the restrictions on Caller ID?
The Caller ID needs to be numeric with at least 6 digits. Calls with Caller IDs which do not satisfy this condition will be dropped. 
Call Recording support on Zentrunk
Currently Plivo's Zentrunk does not support Call Recording.
What is the Calls Per Second (CPS) limitation for Zentrunk SIP Trunking?
By default, The CPS for Zentrunk is set to 2 calls per second per account and 1 call per second per Trunk. For higher CPS requirements, Please contact our ...
Why am I being charged for Abandoned calls/ Short Duration Calls?
Voice calls while using Plivo’s services are subject to carrier regulations within the region of use and the region that the call is made and or received. W...