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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
Chapter 4 Cisco ATA-Supported MGCP Services
Supported Signals and Events
Note By default, hu, hd, and hf are set as persistent events. These events can be disabled by setting bits 18 and
19 in the Cisco ATA ConnectMode parameter. For more information, see the “ConnectMode” section
on page 5-24.
The applicable signals and events are included in the following sections, which show the software
packages of commands that the Cisco ATA supports:
• NCS 1.0 L-Package Supported by the Cisco ATA with MGCP, page 4-8
• MGCP 0.1-1.0 L-Package Supported by the Cisco ATA with MGCP, page 4-9
• MGCP 0.1-1.0 G-Package Supported by the Cisco ATA with MGCP, page 4-9
• MGCP 0.1-1.0 D-Package Supported by the Cisco ATA with MGCP, page 4-10
NCS 1.0 L-Package Supported by the Cisco ATA with MGCP
Table 4-2 Network-Based Call Signaling (NCS) 1.0 L-Package
Code Description Type
0-9,*,#, A, B, C, D Dual tone multifrequency (DTMF)
tones
E, BR
bz Busy tone TO
cf Confirmation tone BR
ci (ti, nu, na) Caller ID (on-hook or off-hook) BR
dl Dial tone TO
ft Fax answer tone (2100 Hz) E
hd Off-hook transition ES
hf Hookflash E
hu On-hook transition ES
l DTMF long-duration E
ld Long-duration connection E, C
mwi Message-waiting indication tone TO
oc Operation complete E
of Operation failed E
ot Off-hook warning TO
r0-r7 Distinctive ringing TO
rg Ringing TO
ro Reorder tone TO
rs Ring splash BR
rt Ringback tone TO, C
sl Intermittent dial tone TO
t Timer (DTMF input) E