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Cisco Cisco Computer Telephony Integration Option 8.5 Technical References

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CTI Server Message Reference Guide (Protocol Version 17) for Cisco Unified Contact Center Enterprise
Release 10.0(1)
Client Events Service
CALL_HELD_EVENT
The CTI Server may send a CALL_HELD_EVENT message to the CTI client when a call is placed on 
hold at the agent’s teleset. The CALL_HELD_EVENT message is defined in 
. 
Field Name
Value
Data Type
Max. 
Size
ConnectionDevice 
ID 
The device ID of the device associated with the connection. STRING
64
AnsweringDevice 
ID (optional)
The device ID of the device that answered the call.
STRING
64
CallingDeviceID 
(optional)
The device ID of the calling device.
STRING
64
CalledDeviceID 
(optional)
The device ID of the originally called device.
STRING
64
LastRedirectDevice 
ID (optional)
The device ID of the previously alerted device.
STRING
64
TrunkNumber 
(optional)
The number representing a trunk.
UINT
4
TrunkGroup 
Number (optional)
The number representing a trunk group.
UINT
4
Maximum message size (including header):
400
Table 5-7
CALL_ESTABLISHED_EVENT Message Format (continued)
Table 5-8
CALL_HELD_EVENT Message Format
Fixed Part
Field Name
Value
Data Type
Byte 
Size
MessageHeader
Standard message header. MessageType = 11.
MHDR
8
MonitorID
The Monitor ID of the device or call monitor 
that caused this message to be sent to the client, 
or zero if there is no monitor associated with the 
event (All Events Service).
UINT
4
PeripheralID
The PeripheralID of the ACD where the call 
activity occurred.
UINT
4
PeripheralType
The type of the peripheral (
USHORT
2
ConnectionDevice IDType
The type of device ID in the 
ConnectionDeviceID floating field 
(
).
USHORT
2
ConnectionCallID
The Call ID value assigned to this call by the 
peripheral or Unified CCE.
UINT
4
HoldingDeviceType
The type of device ID in the HoldingDeviceID 
floating field (
).
USHORT
2