350-801 · Question #488
All calls that involve external parties must be based on a format to simplify the International multisite dial plans when globalized call routing is used. Which standard must be followed to…
The correct answer is A. Internal to External. When implementing normalized call routing for international multisite dial plans, the standard to follow is External to Internal. This means that all external numbers are normalized to an internal E.164 format upon ingress to the collaboration network, simplifying routing logic…
Question
All calls that involve external parties must be based on a format to simplify the International multisite dial plans when globalized call routing is used. Which standard must be followed to implement normalized call routing?
Options
- AInternal to External
- BExternal to Internal
- CExternal (local number) to Internal
- DInternal to External (local number)
How the community answered
(29 responses)- A90% (26)
- C7% (2)
- D3% (1)
Why each option
When implementing normalized call routing for international multisite dial plans, the standard to follow is External to Internal. This means that all external numbers are normalized to an internal E.164 format upon ingress to the collaboration network, simplifying routing logic within the system.
"External (local number) to Internal" is a partial description; the key is normalizing any external number (local or international) to the internal E.164 format, not just local ones.
"Internal to External (local number)" is again focused on outbound calls and specifies a local format, which is not the primary standard for normalized call routing for globalized dial plans (which aims for E.164 internally).
Concept tested: Globalized Call Routing Number Normalization
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab12/srnd/globalized_call_routing.html
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