IP telephony
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... are not network technology specific. Consequently, implementations
of NP behavior in IP telephony, consistent with applicable regulatory
constraints, as well as the need for interoperation with the existing
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... constraints, as well as the need for interoperation with the existing
GSTN NP implementations, are relevant topics for numerous areas of IP
telephony works-in-progress with the IETF.
...
... Implementations of true NP in certain countries (e.g., U.S., Canada,
Spain, Belgium, Denmark) may pose specific requirements for IP
telephony implementations as a result of regulatory and industry
requirements for providing call routing ...
...
There are three general areas of impact to IP telephony works-in-
progress with the IETF:
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- Interoperation between NP in GSTN and IP telephony
- NP implementation or emulation in IP telephony
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... GSTN and IP telephony
- NP implementation or emulation in IP telephony
- Interconnection to NP administrative environment
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... routing number and use that routing number to select the correct
IP telephony gateways that can reach the serving switch that serves
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