Can anybody help me achieve the below, You can have a look below as to how my IP Telephony is in place
PSTN Cloud ---> Voice Gateway ---> CUCM ---> Endpoints (IP Phones)
I have the below requirement.
1. I have a EXECUTIVES [CSS] which should make calls only to 150 destination phones in the PSTN (This seems possible to me)
2. This EXECUTIVES [CSS] should receive calls only from those 150 PSTN phones (I have absolutely no clue how to disallow calls from the rest of the PSTN)
Can somebody help me on the above requirement. Your support is highly appreciated.
Thanks in advance.