It is important to look at the formats used to enter and display telephone numbers. MS Teams-IP Office integration involves different interfaces which differ in how they display the same number.
|
Interface
|
Telephone Number and Extension
|
Telephone Number Only
|
Extension Only
|
|
Azure AD Admin Portal
|
+441632768402 x402
|
+441632768402
|
x402
|
|
441632768402 x402
|
441632768402
|
|
Teams Admin Portal
|
tel:441632768402;ext=402
|
tel:441632768402
|
402
|
|
IP Office Admin Menu
|
MS Teams URI
|
441632768000;ext=402
|
441632768402
|
+402
|
|
System Directory Number
|
441632768402-402
|
441632768402
|
+402
|
|
MS Teams Client
|
(1632) 768 8402 extn 402
|
(1632) 768 8402
|
+402
|
|
IP Office SIP URI[1]
|
+441632768402;ext=402
|
+441632768402
|
–
|
-
The IP Office also adds the required protocol prefix and domain/port suffix elements (for example sip:+441632768402;ext=402@sip.pstnhub.microsoft.com:5061).
