Enabling Payload Type Handling

You can configure H.323 session agents and H.323 interfaces (stacks) with an option that forces symmetric payload type use. For Payload Type Handling to work properly, you must set the following SIP interface and the global H.323 configuration parameters with these values:

• rfc2833-mode—Set this parameter to preferred; the default is transparent.
• rfc2833-payload—Set this parameter to the payload type you want forced for the remote endpoint. Your entry will be between 96 and 127, with 101 as the default.

  To enable forced symmetric payload type handling for an H.323 session agent:

1. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal
   ORACLE(configure)#

2. Type session-router and press Enter.

   ORACLE(configure)# session-router
   ORACLE(session-router)#

3. Type session-agent and press Enter.

   ORACLE(session-router)# session-agent
   ORACLE(session-agent)#

   If you want to add this option to a pre-existing H.323 session agent, select the one you want to edit.

4. options—Set the options parameter by typing options, a Space, the option name Map2833ForceRemotePT with a plus sign in front of it. Then press Enter.

   ORACLE(session-agent)# options +Map2833ForceRemotePT

   If you type options and then the option value for either of these entries without the plus sign, you will overwrite any previously configured options. In order to append the new options to this configuration’s options list, you must prepend the new option with a plus sign as shown in the previous example.

5. Save and activate your configuration.

   To enable forced symmetric payload type handling for an H.323 interface:

6. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal
   ORACLE(configure)#

7. Type session-router and press Enter.

   ORACLE(configure)# session-router
   ORACLE(session-router)#

8. Type h323-config and press Enter.

   ORACLE(session-router)# h323-config
   ORACLE(h323-config)#

9. Type h323-stacks and press Enter.

   ORACLE(h323-config)# h323-stacks
   ORACLE(h323-stack)#

10. options—Set the options parameter by typing options, a Space, the option name Map2833ForceRemotePT with a plus sign in front of it. Then press Enter.

    ORACLE(h323-stack)# options +Map2833ForceRemotePT

    If you type options and then the option value for either of these entries without the plus sign, you will overwrite any previously configured options. In order to append the new options to this configuration’s options list, you must prepend the new option with a plus sign as shown in the previous example.

11. Save and activate your configuration.