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Resolution of phone numbers in Microsoft Teams

Session Border Controller and estos MetaDirectory

With MetaDirectory, it is now possible for both the telephone number as well as the name and the associated company to be displayed in the call window. And this also applies to contacts that the users have not saved in their local address book. 

Number resolution, i.e. the display of additional information about the caller, only works in Microsoft Teams via the local address book.

Company-wide available data from other applications such as CRM systems or ERP systems can be used via the estos MetaDirectory as LDAP directory service for call number resolution. Some Session Border Controllers such as AudioCodes Mediant and anynode (from version 4.6) from TE-SYSTEMS support the connection via LDAP.

Session Border Controllers (SBC) certified by Microsoft for Microsoft Teams provide direct routing for coupling and security of IP telephony between Microsoft network and other telephony networks (PSTN).

What you need for implementation

Three components are necessary to implement the resolution of phone numbers into name and company in Microsoft Teams:

  • A Microsoft-certified Session Border Controller that allows the connection of an LDAP directory, for example AudioCodes' Mediant

TE-Systems         anynode (from version 4.6)
AudioCodesMediant 500L, 500, 800, 1000, 2600, 3000, 4000, 9030, 9080
Mediant CE, VE, SE

  • Deep technical know-how on how to set up the LDAP middleware connection
  • MetaDirectory from estos

Who supports you during implementation
Webinar with TELKAT MULTIKOM and audiocodes logos


The estos Competence Partner TELCAT MUTICOM explains and demonstrates the integration together with the technology partner audiocodes.

See webinar

Webinar with Telefonbau Schneider and anynode logos


The estos Competence Partner Telefonbau Schneider explains and demonstrates the integration together with the technology partner TE-Systems.

See webinar

Contact us now!

Christian Zinke

Christian Zinke

Head of Business Development

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