Cisco Systems ATA 186, ATA 188 manual MGCP Embedded Events

Chapter 4 Cisco ATA-Supported MGCP Services

MGCP Embedded Events

Parameters in Commands Received from the Call Agent Processed by the Cisco ATA

Table 4-8 Parameters in Commands Received from the Call Agent Processed by the Cisco ATA

Parameter	Usage
ResponseAck	CRCX, MDCX, DLCX, RQNT, AUEP, AUCX
CallId	CRCX, MDCX, DLCX
ConnectionID	MDCX, DLCX, AUCX
RequestIdentifier	CRCX, MDCX, DLCX, RQNT
LocalConnectionOption	CRCX, MDCX
ConnectionMode	CRCX, MDCX
RequestedEvents	CRCX, MDCX, DLCX, RQNT
SignalRequests	CRCX, MDCX, DLCX, RQNT
NotifiedEntity	CRCX, MDCX, DLCX, RQNT
DigitMap	CRCX, MDCX, DLCX, RQNT
RequestedInfo	AUEP, AUCX
QuarantineHandling	CRCX, MDCX, DLCX, RQNT
DetectEvents	CRCX, MDCX, DLCX, RQNT
RemoteConnectionDescriptor	CRCX, MDCX

Parameters in Responses Received from the Call Agent Processed by the Cisco ATA

Table 4-9 Parameters in Responses Received from the Call Agent Processed by the Cisco ATA

Parameter	Usage
ResponseAck	DLCX, NTFY (1.0, NCS)
NotifiedEntity	RSIP

MGCP Embedded Events

The embedded event action (E) can be used to reduce response time and increase bandwidth efficiency of MGCP signaling.

Without embedded events, multiple MGCP messages would be required to achieve the same behavior that one message with embedded events can achieve. Also, the time for a dial tone to sound after the user goes off-hook is delayed when embedded events are not used in MGCP messages.

The Cisco ATA supports one level of embedded commands that are compliant with the MGCP 1.0 and MGCP 1.0 NCS profiles. An embedded NotificationRequest that adheres to this limitation must not contain another embedded NotificationRequest.

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for MGCP (version 3.0)

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