Sign in with Microsoft
Sign in or create an account.
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.

You can add your mobile, home, or other phone numbers to your Lync contact card. You can add parentheses and dashes for readability, but Lync stores the number in international dialing format.

Lync phone number example showing international dialing format


  • Lync doesn’t support pauses, extension numbers, or special access codes. Use the keypad to enter the extension number or access code once the call is connected.

  • However, see the tip below if you want to enter an extension number that is displayed but not dialed.

International phone number format

When adding international phone numbers, type the + sign, then the country code followed by the local number.

See the examples below, or search for your own country code.

Recipient's country/region

Country/ code

Local phone number

International phone number for Lync



(12) 3456789




01 02 03 04 05


United Kingdom


12345 678 910


United States


(555) 555-0155




58 (3456) 789, 10, 11



  • You can enter an extension or access code that is displayed but not dialed:

  • Lync edit phone number with extension added

  • Lync main window tabs with keypad highlighted

  1. Enter the number in international format, beginning with a plus sign.

  2. Add a space at the end of the phone number, enter an X (for extension) or other special character, and then enter the extension number.

  1. Lync dials only the main number.

  2. Once the call is connected, use the Lync keypad to enter the extension number or access code.

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!