2.2.5.1 NetMeeting Object Manager Hello

A 'late joiner' object manager instance broadcasts an OMNET_HELLO packet on the well-known ObManControl (Object Manager Control) channel after attaching to a domain that contains an incoming call. ObManControl is used by the client to register a workset group. ObManControl also allows the client to open and examine the contents of workset #0 to discover the names and profiles of all workset groups existing in a domain. Each receiving object manager instance responds with an OMNET WELCOME message. This exchange enables a 'late joiner' instance to discover the user IDs of the other object manager instances in the domain. The 'late joiner' object manager instance later requests a copy of the ObManControl workset group from one of the responding instances.


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Sender

messageType

capsLen

compressionCaps

Sender (2 bytes): The local identifier of the user, which is obtained from the Multipoint Communication Service (MCS) [T122] layer. For more information about the MCS user ID, see [T122] section 3 (Definitions) in the ITU-T Recommendation.

messageType (2 bytes): MUST be set to 0x000A.

capsLen (4 bytes): MUST be set to 0x00000004.

compressionCaps (4 bytes): The bitwise OR of OM_CAPS_ bits. MUST be one of the following values.

Name

Value

OM_CAPS_PKW_COMPRESSION

0x00000002

OM_CAPS_NO_COMPRESSION

0x00000004