With Ooma Office, there’s no need to dial an extra digit or code to make external phone calls. Calls to the United States, Canada, Mexico, and Puerto Rico are all included as part of your monthly calling package, so don’t worry about incurring extra charges when you dial.
The way that you will make a call depends on the type of phone you are using.
You can make an external call by picking up your phone and dialing the 10-digit local number.
Cisco or Yealink IP phone
Pick up the handset or press the speaker key and dial the 10-digit number.
Click the keypad icon () and dial the 10-digit local number.
Click the Settings button () and choose Keypad (). Dial the 10-digit local number.