Agora Signaling Sunset Plan

  • As of August 1, 2019, the Agora Signaling system will be sunset. No new features will be added, and only bug fixes will be made.
  • As of August 12, 2019, all related documents will be moved here.
  • As of December 31, 2019, we will stop updating the legacy Agora Signaling system, but will maintain the system in operation mode.
  • On June 30, 2020, we will shut down the signaling servers and the signaling service will end.

Compatibility between the Signaling SDK and the Agora RTM SDK

Agora RTM SDK v1.0 is compatible with the legacy Agora Signling SDK except for the following features or versions. Expect messages to appear on the Console if you are using features that the Agora RTM SDK does not support.

Signaling Features or Versions Description Our recommendation or comments
Special features
  • Special channel: __agora_channel_event__agora_user_online
  • Special channel attributes: _userNotification, _auto_update_total_num
  • The invoke feature: channel_query_userlist_all
  • SDK customization: setBackground
  • plans to support _agora_channel_event and _agora_user_online. Expect more information on this in the future.
  • No plan to support the other special features.
  • Earlier signaling SDK versions Earlier than v1.1 Upgrade to the latest Signaling SDK version to enable intercommunication with the RTM SDK.
    The Signaling Wechat mini-app SDK Will be supported soon.
    Sends a non-string message (Signaling Web) Puts a non-string as msg in the messageInstantSend(peer, msg, cb) or messageChannelSend(msg, cb) method. Update your integration code to enable intercommunication with the RTM SDK.
    PSTN No further plans to support. will drive solutions for any incompatibility issues discovered. If you find any compatibility issue or have special requirements, please contact our support team or send a note to

    To switch from the legacy Signaling SDK to the Agora RTM SDK, see: Agor RTM SDK vs. Signaling