Using SIP/H.323 rooms directory

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The H.323/SIP rooms directory allows you to enter H.323 IP addresses or SIP URIs as contacts for use with the H.323/SIP Room Connector Call-Out feature on the Windows and Mac Zoom Client.

This article covers:

Prerequisites for using SIP/H.323 rooms directory

  • Pro, Business, Education, or Enterprise account
  • Conference Room Connector add-on
  • Account owner or admin privileges to add a room system to the Directory
  • Zoom Client version 3.5 or higher

How to add a room to the H.323/SIP room directory

  1. Sign in to the Zoom web portal.
  2. In the navigation menu click Room Management then H.323/SIP Room Connector.
  3. Click the Devices tab.
  4. Click Add a H.323/SIP Device.
  5. In the Add a H.323/SIP Device pop-up window, enter the room details as follow:
    • Protocol: H.323 or SIP
    • Display Name: Enter your preferred name to be seen in the directory
    • IP Address or H.323 Extension: Enter the public IP address (can include E.164 Address) or the SIP URI of the room system
    • Encryption: Auto, Yes, or No
  6. Click Add.
  7. (Optional) On the right of the device added, click Edit to make any modification for your H.323/SIP device.
  8. (Optional) On the right of the device added, click Delete to remove that device from the list or click Batch Delete to delete several devices at once.
  9. (Optional) Click Import H.323/SIP Device List, to add a bulk of devices at once (you can download our sample CSV file below).

How to call an H.323/SIP room with the rooms directory


  1. Start a Zoom Meeting.
  2. Click Participants .
  3. Click Invite.
  4. Click Room System.
  5. Click Call Out.
  6. Under IP address or E.164 number dropdown, select the room you want to call out to.
  7. Select H.323 or SIP.
  8. Click Call


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