ADTRAN 600R - Manual (Page 166)

Section 4 User Interface Guide Total Access 600 Series System Manual
164 © 2004 ADTRAN, Inc. 61200624L1-1B
FXS Interface Setup Instructions
Step Action
1 From the main menu, select I NTERFACES .
2 Highlight the C ONFIG menu for the FXS interface and press <E NTER >.
3
Right arrow to select M ODE and choose L OOP S TART , G ROUND S TART , T ANDEM
(E&M), TR08 S INGLE , TR08 UVG, or DPO.
This mode should be set based on the network configuration and the operation
of each FXS port. All FXS ports are independent and do not need to have the
same mode.
4
Set the T X (dB) or transmit direction level for each port. The default value is
recommended.
5
Set the R X (dB) or received direction level for each port. The default value is
recommended.
6 Set the S VC M ODE to I N S ERVICE to activate the port.
7
Set the L INE Z (line impedance) of each port based on the size of the network.
The default value is recommended.
8
Set the M SG I ND to D ISABLE or E NABLE . When set to E NABLE , talk path is
always open, even in on-hook conditions, in order for FXS message tones to
pass through. Disabling this feature will allow higher on-hook voltage but will
not allow on-hook messaging other than caller ID.
9
Configure the on-hook battery voltage using the B ATT M ODE field. 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 A
UTO S WITCH , 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 L
OW B ATTERY
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 L
OW
B ATTERY mode.
10
Specify the interval of battery removal during a forward disconnect state
using the F WD D ISC T IMER field. Choices are F OLLOW S WITCH (default), 500 MS ,
750 MS , 1000 MS , and 2000 MS . When using ATM mode, there is an additional
choice of I GNORE S WITCH . If the timer is set to F OLLOW S WITCH , 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 I
GNORE
S WITCH , the IAD will never remove battery.