CallManager 4 E.164 Resolution

[patrick.hurley]

Do video end points need to register to a gatekeeper for CallManager 4 to resolve e.164 addresses or can CM take the place of the gatekeeper and handle all resolution? Either way, what enhancement is gained by using CM instead of solely using the gatekeeper for E.164 resolution?

This URL shows that the gatekeeper proxies for the CM.

http://www.cisco.com/en/US/partner/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00803edb2a.html#wp1038621

[ebreniz]

You can configure a H.323 client with the E.164 address that is registered with the gatekeeper. E.164 addressing facilitates H.323 configuration and call routing by allowing the Cisco CallManager to route all calls in place of the gatekeeper. The gatekeeper that is to be configured requires the following characteristics:

Forward all calls to the Cisco CallManager for routing.

Calls that are routed from the Cisco CallManager must not be routed back to the Cisco CallManager

[patrick.hurley]

Can this be done without the gatekeeper just using the CallManager?

[jrobrts]

No...

CallManager can not act as a Gatekeeper and thereby will not allow endpoints to register directly to it.