The SetAgentSessionState packet is transmitted from a TAPI client to a TAPI server in a remote procedure call. Sending this packet sets the agent session state that is associated with a particular agent session handle. It generates a LINE_PROXYREQUEST packet to be sent to a registered proxy function handler, referencing a LINEPROXYREQUEST packet of type LINEPROXYREQUEST_SETAGENTSESSIONSTATE.

Req_Func (4 bytes): An unsigned 32-bit integer. The identifier of the function that will be invoked on the remote server. This value MUST be set to 155.

Return Values

On completion of ClientRequest, this field contains the result of the encapsulated telephony request. A nonzero request ID value indicates that the request is in progress and will complete asynchronously, and a LINEERR_Constants value indicates synchronous failure.

MUST return a request identifier if the asynchronous operation starts; otherwise, the function MUST return one of the following error values:

Name	Value
LINEERR_INVALAGENTSTATE	0x8000005A
LINEERR_INVALLINEHANDLE	0x8000002B
LINEERR_INVALPARAM	0x80000032
LINEERR_NOMEM	0x80000044
LINEERR_OPERATIONFAILED	0x80000048
LINEERR_OPERATIONUNAVAIL	0x80000049
LINEERR_RESOURCEUNAVAIL	0x8000004B
LINEERR_UNINITIALIZED	0x80000050

Reserved1 (4 bytes): An unsigned 32-bit integer. MUST be set to zero when sent and MUST be ignored on receipt.

dwRequestID (4 bytes): An unsigned 32-bit integer. The identifier of the asynchronous request.

Value	Meaning
0x00000000	The server MUST generate a unique positive request ID to return as the Ack_ReturnValue.
0x00000001 — 0x7FFFFFFF	The server MUST use this value instead of generating a unique positive request ID.

hLine (4 bytes): An HLINE. The handle to the line device. This field MUST have been obtained by sending the Open packet.

hAgentSession (4 bytes): An unsigned 32-bit integer. The identifier of the agent session whose information is to be changed. The client obtains this handle by sending a CreateAgentSession packet to the remote server.

dwAgentSessionState (4 bytes): An unsigned 32-bit integer. The new agent session state. MUST be one of the LINEAGENTSESSIONSTATE_Constants or zero to leave the agent session state unchanged and modify only the next state.

dwNextAgentSessionState (4 bytes): An unsigned 32-bit integer. The next agent session state. MUST be one of the LINEAGENTSESSIONSTATE_Constants or zero. At most, one of dwAgentSessionState or dwNextAgentSessionState can be zero.

Reserved2 (4 bytes): An unsigned 32-bit integer. This field is used for padding and MUST be ignored on receipt. It can be any value.

Reserved3 (4 bytes): An unsigned 32-bit integer. This field is used for padding and MUST be ignored on receipt. It can be any value.

Reserved4 (4 bytes): An unsigned 32-bit integer. This field is used for padding and MUST be ignored on receipt. It can be any value.

Reserved5 (4 bytes): An unsigned 32-bit integer. This field is used for padding and MUST be ignored on receipt. It can be any value.

Reserved6 (4 bytes): An unsigned 32-bit integer. This field is used for padding and MUST be ignored on receipt. It can be any value.

Reserved7 (4 bytes): An unsigned 32-bit integer. This field is used for padding and MUST be ignored on receipt. It can be any value.

Reserved8 (4 bytes): An unsigned 32-bit integer. This field is used for padding and MUST be ignored on receipt. It can be any value.

Reserved9 (4 bytes): An unsigned 32-bit integer. This field is used for padding and MUST be ignored on receipt. It can be any value.