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Chapter 4 - MGCP Protocol Features Establishing a MGCP Session

Mediatrix 4100

Establishing a MGCP Session

The following is an example describing how to establish a MGCP session

Figure 21: Layout Example

Figure 22: MGCP CAll Flow

Call Agent

Unit A Unit B

Unit A Call Agent Unit B

Unit is

started

Repeated on

all ports

Dialing

Ringing

Ringback

Off hook

Media Flow Media Flow

Conversation

Hangs up

Busy tone

Hangs up

RSIP

code 200 (request succesful)

AUEP

code 200 (request succesful)

RQNT

code 200 (request succesful)

RQNT

code 200 (request succesful)

NTFY

code 200 (request succesful)

RQNT

code 200 (request succesful)

CRCX

code 200 (request succesful) with SDP

CRCX with SDP

code 200 (request succesful) with SDP

MDCX with SDP

code 200 (request succesful)

NTFY

code 200 (request succesful)

RQNT

code 200 (request succesful)

MDCX

code 200 (request succesful)

NTFY

code 200 (request succesful)

DLCX

code 250 (request succesful)

RQNT

code 200 (request succesful)

RQNT

code 200 (request succesful)

NTFY

code 200 (request succesful)

DLCX

code 250 (request succesful)

RQNT

code 200 (request succesful)