Adtran 612 Manuale Utente

Section 4  User Interface Guide

Total Access 600 Series System Manual

 84

© 2004 ADTRAN, Inc.

61200624L1-1B

Indicates whether the module is 

or 

. This does not indicate whether the port has 

been mapped. For proper operation, the port must be mapped using the 

menu. Default is 

Sets the line impedance. Choices are 

µ

µ

and 

. The line impedance of each port is based on the size of the network. Default is

.

This is better referred to as On-Hook Message Waiting. When this is set to 

 talk path is always 

open, even in On-Hook conditions, in order for these FSK message tones to pass through. Default is 

. Enabling on-hook message waiting will allow message lamp usage but will cause a lower 

on-hook voltage. Disabling this feature will allow higher on-hook voltage but will not allow on-hook 
messaging other than caller ID.

Configures the on-hook battery voltage. For most IAD installs, the FXS loop is short with 6 to 7 V present 
on tip / ring. To reduce power dissipated during off-hook conditions, the battery is lowered for short loop 
lengths. When set to 

, the IAD uses a higher on-hook battery voltage (48-52 V). When 

off-hook, it automatically switches to low battery (24-26 V) to minimize power dissipation. When set to 

mode, the higher battery is not used and the voltage is a constant 26 V even while on-hook. 

The tip/ring voltage is reduced to 26 V when using the 

 mode.

Specifies the interval of battery removal during a forward disconnect state. Choices are 

 

(default), 

, 

, 

, and 

.   When using ATM mode, there is an additional choice of 

. If the timer is set to 

, the Total Access 6XX will follow the switch at all 

times; this is normal operation. If a time period has been selected, the Total Access 6XX will remove 
battery for the specified time period OR as long as the switch requests battery removal, whichever is 
longer. For example, if the timer expires but the switch continues to request battery removal, the Total 
Access 6XX will follow the switch and continue to remove battery. For ATM mode, if the timer is set to 

, the IAD will never remove battery.

Sets the port to use E&M signaling on the T-Span and either loop start or ground start supervision on the 
analog 2-wire interface. To access submenus for this item, use the arrow keys to scroll to the 

 

column for the corresponding module, and then press 

.

Sets the port to either 

 or 

 mode. Default is 

.

Sets the supervision method used to either 

 or 

. Default is 

.