With legacy system Lotus Sametime Unified Telephony always operates under the assumption that Endpoint Rerouting is requested in case a route in the route set returned by translation does not result in a successful call establishment.
Additionally, Lotus Sametime Unified Telephony legacy system always operates under the assumption that Proxy Registration is requested.
Lastly, from Lotus Sametime Unified Telephony 220.127.116.11 on, Proxy Bypass is not a system wide feature anymore. It is now necessary to turn on bypassing a configured proxy by setting the new attribute "Allow Proxy Bypass" on the SIP Proxy endpoint.
In legacy system, the "Rerouting" checkbox in Route lists has been renamed to "Fallback to Local Numbering Plan".
Parent topic: CAC (Call Admission Control) Rerouting