SIP/H.323 Room Connector Dial Strings in Zoom App
If you want to avoid the Room Connector splash screen, you can enter the meeting details in the dial string on the SIP/H.323 device and join directly into the meeting.
For an H.323 or SIP device to join, the meeting must be hosted by a licensed user. It is possible to use the attendee’s Room Connector license if the host has no available Room Connector license, but the attendees have one.
H.323 dial string format
The full H.323 dial string format
[IP Address]##[Meeting ID]#[Passcode]#[Command]#[Host Key]To enter a meeting in Gallery view (default)
Meetings without a passcode:
Meetings with a passcode:
To enter a meeting in full screen
Meetings without a passcode:
[IP Address]##[Meeting ID]##11Example: 192.168.1.25##123456789##11
Meetings with a passcode:
[IP Address]##[Meeting ID]#[Passcode]#11Example: 192.168.1.25##123456789#12345#11
To enter a meeting with Host Key
Meetings without a passcode:
[IP Address]##[Meeting ID]###[Host Key] Example: 192.168.1.25##123456789###123456Meetings with a passcode:
[IP Address]##[Meeting ID]#[Passcode]#[Layout]#[Host Key] Example: 192.168.1.25##123456789#12345#11#123456Note: For some devices, please try [IP Address]##[Meeting ID]*[Passcode]*[Command]
To enter a meeting with dual video enabled
Meetings without a passcode:
Example: 192.168.1.25##123456789##308
Meetings with a passcode:
[IP Address]##[Meeting ID]#[Passcode]#308Example: 192.168.1.25##123456789#12345#308
SIP dial string format
The full SIP dial string format
[Meeting ID].[Passcode].[Command].[Host Key]@[IP Address]or
[Meeting ID].[Passcode].[Command].[Host Key]@zoomcrc.comTo enter a meeting in Gallery view (default)
Meetings without a passcode:
[Meeting ID]@[IP Address] Example: 123456789@192.168.1.25Meetings with a passcode:
[Meeting ID].[Passcode]@[IP Address] Example: 123456789.12345@192.168.1.25To enter a meeting in full screen
Meetings without a passcode:
Meetings with a passcode:
[Meeting ID].[Passcode].11@[IP Address] Example: 123456789.12345.11@192.168.1.25To enter a meeting with dual video enabled
Meetings without a passcode:
[Meeting ID]..308@[IP Address] Example: 123456789..308@192.168.1.25Meetings with a passcode:
[Meeting ID].[Passcode].308@[IP Address] Example: 123456789.12345.308@192.168.1.25To enter a meeting with Host Key
Meetings without a passcode:
[Meeting ID]…[Host Key]@[IP Address] Example: 123456789…123456@192.168.1.25Meetings with a passcode:
SIP/H.323 configuration and video layout dial strings
H.323/SIP Configuration allows you to change the default video layout. The dial string for Gallery View will join with the default video layout selected if you have not chosen Gallery View as your default video layout. In the dial string, entering 11 will move to the next video layout option, and entering 1111 will move to the third video layout option.
Selected Default | 11 in Dial String | 1111 in Dial String |
Gallery View | Full Screen | Active Presence |
Full Screen | Active Presence | Gallery View |
Active Presence | Gallery View | Full Screen |
Advanced commands
When joining a Zoom Meeting from a SIP/H.323 device, advanced commands can be added to the dial string to enable certain features, or to force certain in-call behavior.
The command is added to all H.323 and SIP dial strings.
Dial commands
Command | Description |
100003 | Force sending default video size to the device, max 720p |
100004 | Favor video for bandwidth (Uses 3/4 Bandwidth for video and 1/4 bandwidth for content). |
100005 | Equal shared bandwidth for both video and content. |
100006 | Favor content sharing for bandwidth (Uses 3/4 bandwidth for content and 1/4 Bandwidth for video). |
100009 | Enable AES-256 encryption. |
200001 | Force out-of-band DTMF signal. |
200006 | Suppress audio prompts when joining a meeting. |
200009 | Video sharing mode for device sharing. |
300001 | Use Audio Volume Level 1 when joining a meeting. |
300002 | Use Audio Volume Level 2 when joining a meeting. |
300003 | Use Audio Volume Level 3 when joining a meeting. |
306 | Music sharing mode for device sharing. |
307 | Removes network icons from the in-meeting overlay. |
308 | Enables dual-screen mode, with Gallery view and Active Speaker view on each display. |
309 | Enables 1080p video support. |
504 | Suppress visual menu. Can be re-enabled by pressing 7 on a DTMF remote. |
505 | Disables dual-stream video and forces video and content as a single-stream. |
506 | Change layout for closed captioning. When enabled moves closed captioning to the bottom of the screen. |
508 | Suppress in-meeting reactions displaying from other participants. |
601 | Hides the meeting ID, when a room system is the first participant to join. |
603 | Removes participant names when viewing participant video feeds. |
606 | Suppresses the entire in-meeting overlay include participant names for video feeds, network icons, and other visual icons. |
608 | Enables dual-screen mode, with Gallery view spread across both displays. |