> ## Documentation Index
> Fetch the complete documentation index at: https://telecomsxchange.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Update did entry

> This API allows you to update certain phone number SIP or SMPP configurations.

**SIP DNS SRV Records**

TCXC supports SIP DNS SRV records exlusivley for the
[Restcomm Cloud](https://cloud.restcomm.com/) platform.

To point your DID number to Restcomm cloud using SIP SRV records, use below
format:

contact: did\_number\@sip\_udp{organization}.restcomm.com

Example:

[1234567893@\_sip\_udp\_telecomsxchange.com.restcomm.com](mailto:1234567893@_sip_udp_telecomsxchange.com.restcomm.com)