SIP TLS Trunk

[Roman Isaiev]

Hello everyone!

I need to configure SIP TLS trunk between my CUBE and ITSP.

Do i need to use PVDM, for conversion SRTP>RTP and back ?

If i need to use PVDM, i have pvdm4-32 and pvdm4-64 in my ISR 4331, how to calculate the number of encrypted calls?

[Roger Kallberg · Accepted solution]

No you don’t need to have a PVDM.

[Roman Isaiev]

Thank you, for your response and help!

[Roger Kallberg]

You’re very welcome.

[Robert Profit]

@Roman Isaiev 

RTP<->SRTP interworking does not required DSP resources for routers that are running IOS XE.
Here is the documentation:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube/configuration/cube-book/srtp-rtp-interworking.html

Here is calculator if you do need calculate any type of transcoding/conferencing/DSP resources.
Cataloged under the Cisco Tools & Resources repository the new tool can be directly accessed at https://dsp-calc.cisco.com/

Note: CCO login is required

V/R,

Rob Profit

[Roman Isaiev]

Thank you, for your response and help!

[Robert Profit]

Of course and you're welcome!