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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for MGCP (version 3.0)
OL-4803-01
Appendix C MGCP Call Flows
Table C-1 Action Log
Step Action Log
1. Cisco ATA 1 goes off-hook—Cisco ATA 1 to Call Agent
NTFY 16 aaln/1@[192.168.2.45] MGCP 1.0
N: 192.168.3.76:2427
X: 10
O: L/hd
K: 15
2. OK—Call Agent to Cisco ATA 1
200 16 OK
3. An inactive connection is created on Cisco ATA 1—Call Agent to
Cisco ATA 1
crcx 57698 aaln/1@[192.168.2.45] MGCP
1.0
K: 57687
C: 26962
X: 29620
N: 192.168.3.76:2427
L: p:10-20, a:PCMU;G729
M: inactive
4. OK—Cisco ATA 1 to Call Agent
200 57698 OK
I: 0
v=0
c=IN IP4 192.168.2.45
m=audio 10000 RTP/AVP 0 18
5. Cisco ATA 1 gets dial tone—Call Agent to Cisco ATA 1
rqnt 57699 aaln/1@[192.168.2.45] MGCP 1.0
K: 57698
X: 29621
R: L/hu(N),L/hf(N),D/[0-9*#](N)
S: L/dl
D: x
6. OK—Cisco ATA 1 to Call Agent
200 57699 OK
7. Cisco ATA 1 dials ‘1’—Cisco ATA 1 to Call Agent
NTFY 17 aaln/1@[192.168.2.45] MGCP 1.0
N: 192.168.3.76:2427
X: 29623
O: D/1
K: 16
8. OK—Call Agent to Cisco ATA 1
200 17 OK
9. Dial tone stops playing on ATA 1—Call Agent to Cisco ATA 1
rqnt 57707 aaln/1@[192.168.2.45] MGCP 1.0
K: 57700-57701
X: 29629
R: L/hu(N),L/hf(N),D/[0-9*#](N)
S:
D: x
10. OK—Cisco ATA 1 to Call Agent
200 57707 OK
11. Cisco ATA 1 dials ‘0’—Cisco ATA 1 to Call Agent
NTFY 18 aaln/1@[192.168.2.45] MGCP 1.0
N: 192.168.3.76:2427
X: 29629
O: D/0
K: 17
12. OK—Call Agent to Cisco ATA 1
200 18 OK
13. Cisco ATA 1 dials ‘2’—Cisco ATA 1 to Call Agent
NTFY 19 aaln/1@[192.168.2.45] MGCP 1.0
N: 192.168.3.76:2427
X: 29629
O: D/2
K: 18
14. OK—Call Agent to Cisco ATA 1
200 19 OK