Best Way To Remove H323 Language Codec

Sometimes your system may display a message about the h323 language codec. There can be several reasons for this problem.

H.323 provides standards for devices, computers, and multimedia communication alternatives in packet-based networks and defines transmission protocols as factors in real-time video, audio, and data. H.323 is widely used in IP video conferencing, Voice over Internet Protocol (VoIP), and Internet telephony.

h323 voice codec

In any typical H.323 call setup scenario, RAS messages are exchanged, H.225 setup messages are sent over a permanent control channel. For example, in the figure below, both gateways are registered on the same volume Not the gatekeeper, and I would say that the gatekeeper chose direct call signaling.

  1. Gateway 1 (the calling gateway) initiates an Access Request (ARQ) (1)/Access Confirmation (ACF) (2) exchange with the Gatekeeper.
  2. The gatekeeper returns the actual call signaling link address of gateway 2 (the called gateway) in the particular ACF.
  3. Gateway 1 then sends a configuration message (3) to Gateway 2 using a transport that helps with this.
  4. Setup completed and call (4) begins.
  5. When Gateway 2 needs to answer a call, it initiates an ARQ(5)/ACF(6) passing gatekeepers to each other.
  6. The gatekeeper responds with ACF/ARJ (6).
  7. Gateway 2 sends an alert message (7) to Gateway 1. (If Gateway 2 instead receives an [ARJ] (6) ACF message, it sends a Release Complete message to Gateway 1 instead of processing the alert message .)
  8. Gateway 2 responds with a connection message (8) to Gateway 1


The H.245 transport trigger control channel used in H.245 signaling can send any H.225 message: Visit Alert, Follow, or Connect.

Fast Connect allows endpoints to establish movie channels without waiting for an H.245 connection to open. Unfortunately, this simplifies the messaging and the amount of processing that needs to be done before connections to endpoints can be established. Here is an overview of H.323 fast connection recommendations:

  1. The calling endpoint sends a set message containing a fastStart element, which in turn contains a sequence of intelligently encoded channel structures, each representing a media type with different capabilities to “send” and “receive” together.
  2. The called endpoint selects one or more of the media types offered near the calling endpoint for sending and receiving instructions, and returns the selection in the FastStart element to send any H.225 message over Plus and Connect. At this point, our called endpoint should be ready to accept the new media channel it has chosen.
  3. When H.245 methods are required and it is possible that one of the two endpoints does not support tunneling, a separate H.245 connection is used.

Is H 323 still used?

H.323 is just as dead as SNA, ISDN or COBOL. Although VoIP is no longer part of the strategic direction, it will continue to be used over the next decade.

Fast Connect cannot be uniquely configured. All H.323 version 2 VoIP terminals are capable of initiating or Make Fast Connect calls. It is believed that experts will argue that a gateway is capable of sending and receiving fast connection patterns unless it develops its own appropriate Resource Reservation Protocol (RSVP) call point. RSVP means that the quality of service should be set to a value other than the maximum efficiency default using the req-qos command. When the peer is configured for RSVP, the traditional “slow” connection procedures will succeed and the endpoint will not try when you need to initiate a connection quickly and will not respond when you want to request a fast connection based on its appearance.