5-20
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for MGCP (version 3.0)
OL-4803-01
Chapter 5 Parameters and Defaults
Audio Configuration Parameters
Default Names
• PCMU for G.711µ-law
• PCMA for G.711A-law
• G723 for G.723.1
• G729 for G.729
Voice Configuration Menu Access Code
Not applicable
AudioMode
Description
This parameter represents the audio operating mode. The lower 16 bits are for the Phone 1 port, and the
upper 16 bits are for the Phone 2 port. Table 5-1 provides definitions for each bit.
Value Type
Bitmap
Default
0x00350035
Voice Configuration Menu Access Code
312
Table 5-1 AudioMode Parameter Bit Definitions
Bit Number Definition
0 and 16 0/1—Disable/enable G.711 silence suppression. This is enabled by default.
1 and 17 0—Enable selected low-bit-rate codec in addition to G.711. This setting is the
default.
1—Enable G.711 only.
2 and 18 0/1—Disable/enable fax CED tone detection. This is enabled by default.
3 and 19 Reserved.
4-5 and 20-21:DtmfMethod 0—Always in band.
1—By negotiation
2—Always out of band.
3—Disabled; no DTMF is sent. This is the default setting.
6-15 and 22-31 Reserved.