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of 264
 
Section 4 User Interface Guide Total Access 600 Series System Manual
84 © 2004 ADTRAN, Inc. 61200624L1-1B
INTERFACES (FXS) > CONFIG > SVC MODE
Indicates whether the module is I
N
S
ERVICE
or O
UT
OF
S
VC
. This does not indicate whether the port has
been mapped. For proper operation, the port must be mapped using the
DS0 M
APS
menu. Default is I
N
S
ERVICE
.
INTERFACES (FXS) > CONFIG > LINE Z
Sets the line impedance. Choices are 600
OHMS
, 900
OHMS
, 600
OHMS
+ 2.16µF, 900
OHMS
+ 2.16µF, and
A
UTO
. The line impedance of each port is based on the size of the network. Default is
600
OHMS
.
INTERFACES (FXS) > CONFIG > MSG IND
This is better referred to as On-Hook Message Waiting. When this is set to
E
NABLE
,
talk path is always
open, even in On-Hook conditions, in order for these FSK message tones to pass through. Default is
D
ISABLE
. 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.
INTERFACES (FXS) > CONFIG > BATT MODE
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
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.
INTERFACES (FXS) > CONFIG > FWD DISC TIMER
Specifies the interval of battery removal during a forward disconnect state. 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.
INTERFACES (FXS) > CONFIG > TANDEM
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
T
ANDEM
column for the corresponding module, and then press
<E
NTER
>.
INTERFACES (FXS) > CONFIG > TANDEM > CONVERSION MODE
Sets the port to either L
OOP
S
TART
or G
ROUND
S
TART
mode. Default is L
OOP
S
TART
.
INTERFACES (FXS) > CONFIG > TANDEM > SUPERVISION
Sets the supervision method used to either I
MMEDIATE
or W
INK
. Default is I
MMEDIATE
.