IETF
Click on the red underlined text to get to the source
... GSTN NP implementations, are relevant topics for numerous areas of IP
telephony works-in-progress with the IETF.
This document describes three types of number portability and the
...
... There are three general areas of impact to IP telephony works-in-
progress with the IETF:
- Interoperation between NP in GSTN ...
... called directory number.
The IETF enum working group is defining the use of the Domain Name
System (DNS ...