3com MSR 20-20 참조 매뉴얼

string: Area ID, a string of 1 to 31 characters, which consists of digits 0 through 9 
and the pound sign #.

Use the area-id command to configure the area ID of the voice GW.

Use the undo area-id command to remove the specified area ID.

By default, no area ID is configured.

The voice area ID is set in VoIP entity view and will be automatically added to the 
beginning of called numbers when making calls. If SIP is specified for routing, this 
command is invalid.

match-template, address, and entity.

# Configure the area ID 6# for the VoIP voice entity 101.

<Sysname> system-view

[Sysname] voice-setup

[Sysname-voice] dial-program

[Sysname-voice-dial] entity 101 voip

[Sysname-voice-dial-entity101] area-id 6# 

busytone-t-th time-threshold

Analog FXO voice subscriber line view

time-threshold: Number of busy tone periods for detection, in the range of 2 to 
12. A bigger value means a longer busy tone detection time.

Use the busytone-t-th command to configure the number of busy tone periods 
for detection.

Use the undo busytone-t-th command to restore the default.

By default, the number of busy tone periods for detection is 2.

You can enable the busy tone detection optionally. Under particular situations, 
however, the actual busy tone data cannot exactly match the busy tone 
parameters configured for the system. If there is a big difference, the busy tone 
may not be detected correctly, resulting in on-hook failures or wrong on-hooks. By 
adjusting the time threshold of busy tone detection, you make the busy tone 
detection more precise.

Note that before you configure a threshold of busy tone detection, you must test it 
fully making sure that on-hook operation can be done properly.