PSTN calling is an add-on service to Skype for Business Cloud PBX. If you want to learn more about Skype for Business online voice offerings, please read the entire series here.

PSTN calling feature in Skype for Business online allows users to make calls to and receive calls from people inside and outside the organization. This feature enables administrators to search, acquire and assign the phone numbers to the users in the organization. Users enabled for PSTN calling in Office 365 can make voice calls across all Skype for Business devices including PCs, mobile devices and VOIP phones. Users can also control their calls through mute/unmute, hold/resume, call transfers, and call forwarding features, and if necessary, make emergency calls. It provides two different types of PSTN voice calling plans:

• PSTN Domestic Calling
• PSTN Domestic and International Calling

PSTN Domestic Calling: PSTN Domestic Calling allows user to make domestic calls with in the same country or region. User’s license usage location determines what is considered “domestic” for a specific user. Each user gets PSTN calling minutes that consist of both domestic outgoing, and domestic and international inbound calls (originating from anywhere in the world). Following are the PSTN calling minutes for specific locations:

Untied States: 3000 minutes (including Puerto Rico)

United Kingdom: 1200 minutes

PSTN Domestic and International Calling: PSTN Domestic and International Calling allows user to make domestic and international (196 countries) calls. User’s license usage location determines what is considered “domestic” and what is considered “international” for a specific user. Each user gets PSTN calling minutes that consist of both domestic and international outgoing, and domestic and international inbound calls (originating from anywhere in the world). Following are the PSTN calling minutes for specific locations:

Untied States: 3000 domestic minutes (including Puerto Rico) OR 600 international minutes

United Kingdom: 1200 domestic minutes OR 600 international minutes

Country and regions specific monthly minute’s details can be found here.

Courtesy: Microsoft