Hi All,
We are going to enable the phone system for MS Teams and integrate it with Cisco On-Promise UCM by Direct Routing. Call from MS phone system will route through SBC to CUCM and then back to SBC to the PSTN. And we need to assign phone numbers to users. As I know we have two ways to assign the phone numbers to users.
Option 1: Set-CsUser -Identity "xxx@xxx.xxx" -OnPremLineURI TEL:+2149967389 -EnterpriseVoiceEnable $true -HostVocieMail $true
Option 2: We can log in MS admin-->phone number portal to generate the phone number automatically, then assign to the users.
Question1: What is the difference between these two options?
Question2: If we choose option1, we can assign random phone numbers to users? But we can not see these numbers in phone numbers portal, right?
Queation3: If we choose option2, how do the phone numbers generate automatically? do we need to provide the service phone numbers(which are authenticated by PSTN) to MS teams in advance? And then the phone numbers will generate from these "service phone numbers" which we provided?
Question4: As I know, if we choose option2, we just select the location, how many numbers we need, and then MS Teams will generate these numbers, but we can not choose which phone numbers we need to assign, right?
Question5: Can we share the phone number with Cisco UCM? For example, we have IP phone register in CUCM with DID number 2149961234, can we use this DID number as a phone number in MS Teams? Because if we call outbound to PSTN, carriers will check the calling number. So we need to assign the same number to MS Teams to make sure they can call outside.
Best Regards,
Thanks.



