Hosted Directory LDAP - Lightweight Directory Access Protocol

The VoiceHost Hosted Phone Directory service gives our customers access to a centralised phonebook to use with any compatible phone that is provisioned by VoiceHost.

Currently supported on Snom, Yealink and Cisco devices that support the lightweight directory access protocol; our directory can be used for both outbound calling, and inbound caller ID lookup (inbound caller ID lookup not supported on Cisco devices).

Supported phones connect to our hosted directory using LDAP; where they can search through both a central directory for the account, and a personalised sub-directory for their individual VoiceHost seat.

A management interface has been built into the Hosted PBX Control panel to allow users to setup and manage their directory. This enables users to add or edit entries individually for a simple directory, or use the CSV import tool to import data from another source.

LDAP uses the following ports:

TCP and UDP port 389 (LDAP) and 636 (LDAPS)


  • Each hosted seat can have its own personalised directory.
  • Management interface built into Control Panel (
  • Bulk upload contacts to directory using CSV import tool.
  • Only available to phones provisioned by VoiceHost.
  • Fully supported on Yealink and Snom phones (except Yealink T19P/T20P).
  • Partial support on Cisco phones, no lookup for inbound calls due to hardware limitations.
  • Bolt-on for our Hosted PBX Solution and will be charged per seat, recurring monthly.

Uploading Bulk Phonebook Entries

CSV file uploads are supported using the format prescribed below.

CSV Upload format required for LDAP
DirectoryExample 1123456789712345689123456789200
DirectoryExample 2123456789  201

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UK Freephone 0800 2 545454

International +44 1603904090

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