Zhone 2000 用户手册

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To display information about Loop Gain settings, type 2. The IAD displays 
the loop gain values for each telephone port on the IAD (sample shown):

Port

Rx

Tx

1

-4

-7

2

-4

-7

3

-4

-7

4

-4

-7

Press any key to return to the menu. Press Escape to return to the Voice 
Configuration menu and continue with other voice path configuration.

To set Transmit and Receive Loop Gain values by port, follow these steps:

1. Type 3 to select Configure Loop Gain setting per port.

The IAD displays a prompt for the line to configure:
Select Line: [1-8]

Type the line number and press Enter.

2. The IAD displays this prompt for the transmit loop:

Enter Transmit Loop Gain for all ports (range -9dB/
3dB) [-2dB]:

Type the value (include a dash for negative values) and press Enter.

3. The IAD displays this prompt for the receive loop:

Enter Receive Loop Gain for all ports (range -9dB/
3dB) [-4dB]: -5

Type the value (include a dash for negative values) and press Enter.

4. The IAD saves the loop gain values and displays the menu.
5. Press Escape to return to the Voice Configuration menu and continue 

voice path configuration.

6. Reset the IAD (page

) when you finish voice path configuration.

The country mode selection menu allows you to select a national 
parameter list file for specified countries or regions. Each file contains 
definitions of call progress tones, normal and distinctive ring cadences, 
ringer frequency, hook flash timings, and SLIC settings.  

To set a specific country mode, type C to display the Country Mode 
Selection menu, which contains commands to set the base country. 
Specifications for each country code includes minimum and maximum 
flash hook, ring frequency, receive and transmit gain, reference or input 
impedance, and load impedance settings. These specifications are listed 
in 

, Country Codes, on page

.

 

The country mode option is only available on IADs with POTS 
ports. This option does not apply to an ISDN-based IAD.