General

How can I ensure that my call is going through the nearest region or PoP to avoid latency?
Zentrunk infrastructure includes 6 Points of Presence across 5 continents. When a call is initiated by the user, Plivo locates the closest PoP to handle th...
Does Zentrunk support SIP over TLS?
Plivo Zentrunk supports SIP over TLS and media over SRTP.
What SIP Request methods does Zentrunk SIP trunking support?
Plivo Zentrunk supports INVITE, CANCEL, ACK and BYE methods.
What methods of authentication does Zentrunk SIP Trunks support?
Plivo Zentrunk supports IP address and credentials authentication. This can be configured on your Zentrunk page.
What IP addresses do I need to whitelist on my communications infrastructure for Zentrunk SIP Trunking?
Please whitelist all the IP’s below and refer to the Zentrunk SIP Trunking interconnection guides for more details on how to configure your infrastructure....
What are the required equipment I need to be able to use Zentrunk SIP Trunking?
Plivo Zentrunk can work with any SIP-based device such as IP-PBX, Session Border Controller (SBC), etc. Please refer to the Zentrunk Getting Started Docum...
What DTMF types does Zentrunk SIP Trunking support?
Plivo Zentrunk SIP Trunking supports RFC-2833.
What codecs does Zentrunk SIP Trunks support?
Currently, Plivo Zentrunk SIP Trunks support PCMA and PCMU codecs.
Does Plivo Zentrunk SIP Trunking support T.38 Fax?
Currently, Plivo Zentrunk does not support T.38 Fax.
Is there a limit to how many Zentrunk trunks and IP access control lists can I create?
There is no limit on the number of trunks and IP access control lists that can be created on your Plivo account.