CUCM CUC IMP 11.5 I'm still somewhat noobish on things, but for a phone device, what does RCSS do ? I've read the description that mention Refer. Can anyone put it in more simplified terms ? Thanks,
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To add to what Ratheesh said, on a Single Number Reach Profile there are two Calling Search Spaces.
The first, the "Rerouting Calling Search Space", is used to determine to what external destinations an SNR call can be sent to. For instance, my enterprise DN may be able to call an international number, but the administrator may not want an SNR "remote destination" to be an international cell phone number.
The "Calling Search Space" is used for "mobile voice access" destinations. Which is when you can call in to an enterprise MVA number via the PSTN and ask CUCM to dial an outbound call on your behalf, where the callerID for the call is your enterprise DN.
On a Device -> Phone, does the Rerouting Calling Search Space get combined with the Line CSS when used for SNR in the way that regular Line/Device CSS or Primary/Secondary Forward All CSS does?
Or does it operate independently on the Phone page like it would on a Trunk?
Also, assuming that SUBSCRIBE CSS operates on its own?
No rerouting CSS is not combined. It only evaluates the partition to see if the rerouted destination is allowed.
Subscribe CSS is completely different..This is used for presence.