Quick Start Guide, 61200791L1-13C, July 2004 Technical Support 1-888-4ADTRAN (1-888-423-8726) © 2004 ADTRAN, All Rights Reserved
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NetVanta 950 IAD Octal FXS Access Module P/N 1200791L1
Quick Start Guide
* Indicates default values
COMMANDS (CONTINUED)
dnis-delay {500 | 1000 | 1500 | 2000 | 2500 | 3000 | 5000}
Defines the time delay after transmitting a wink in response to the 2W going off-hook (after ringing) before
transmitting off-hook towards the T1 interface. The dnis-delay is only valid when em-conversion is
configured for wink. By default, dnis-delay is disabled. The no version of this command disables dnis-
delay.
dnis-wink-timeout {enable*| disable}
When dnis-delay is specified and dnis-wink-timeout is enabled, a wink is returned to the originating
switch after five seconds if the port does not detect an off-hook condition. Disabling this option allows the
FXS port to ring without winking until the call is answered. By default this option is enabled when dnis-delay
is activated.
Note: Trunks can be taken out of service by the central office switch if no wink is received. Use
caution when disabling this option.
em-conversion {immediate | wink}
Specifies the E&M Tandem conversion for the interface. Selecting immediate configures the FXS Module to
transmit digits immediately following an off-hook condition (seizing the line) on an outbound call. Also, no
wink is provided for inbound calls. Selecting wink configures the FXS module to implement a wink process
for inbound calls. When the network seizes the line the FXS module will wink towards the network before
activating the call. For outbound calls the FXS module waits for a wink from the receiving equipment before
activating the call. By default, em-conversion is disabled.
forward-disconnect delay {250 | 500 | 750 | 1000* | 2000}
Specifies the number of milliseconds the FXS Module waits, after initiating a disconnect sequence on the
FXS interface as a result of the remote end terminating the call, before returning to an idle condition. By
default, forward-disconnect delay is 1000 ms. A forward-disconnect delay is only applicable when the
interface is configured for loop start and em-conversion is enabled. The default setting is recommended
initially.
forward-disconnect battery {remove* | reverse}
Specifies the battery behavior during a forward-disconnect situation (where the remote equipment ends the
call). Selecting remove configures the FXS Module to remove battery from the circuit when the remote
equipment ends the call (on-hook condition). Selecting reverse configures the FXS Module to reverse the
battery polarity on the circuit when the remote equipment ends the call. By default, forward-disconnect
battery is set to remove. Setting forward-disconnect battery is only necessary when em-conversion is
configured and a forward-disconnect delay is specified. If configured, the recommended initial setting is
the default.
impedance {600c | 600r* | 900c | 900r}
Sets the AC impedance of the FXS interface.
Option 600c 600r* 900c 900r
Impedance 600Ω + 2.16 µF 600Ω900Ω + 2.16 µF 900Ω
loopback {analog | digital}
Activates a loopback on the FXS Module. Selecting an analog loopback initiates a loop back toward the T1
network side of the connection after passing through analog filters in the voice codec. Selecting a digital
loopback performs the same loopback before passing through analog filters in the voice codec.
ringback {enable | disable*}
Configures the FXS Module to provide ringback to outside callers when not provided by the central office
switch. Ringback is only necessary for E&M applications and em-conversion must be configured.
rx-gain {-12.0 to 6.0} (configure in 0.1 dB increments)
Defines the receive gain characteristics on the FXS interface. Receive gain determines the amplification of
the received signal before transmitting out the FXS interface, By default, the rx-gain is -3.0 dB.
signal {loop-start* | ground-start}
Configures the signaling mode for the FXS interface. Loop-start signaling bridges the tip and ring to
indicate an off-hook (seizing the line) condition. Ground-start signaling applies resistance to the tip
conductor of the circuit to indicate an off-hook condition. This signaling mode must match the configuration
of the network.
test tone {near | far}
Activates a 1 kHz test tone sent towards the FXS interface (near) or out the T1 network interface to the
remote end (far).
test battery
Provides battery on the 2-wire FXS interface. This is helpful when troubleshooting wiring problems with the
FXS equipment.
test reverse-battery
Provides battery with reverse polarity on the 2-wire interface. This is helpful when troubleshooting wiring
problems with the FXS equipment.
test ringing
Activates ringing voltage on the 2-wire interface using a 2 seconds on and 4 seconds off cadence. The no
version of this command removes ringing voltage from the interface.
test signaling-bits {0000 | 0101 | 1010 | 1111}
Sends the specified signaling bits towards the T1. This is helpful when troubleshooting from the far end. Set
the signal bits using this command, then view the status of the line from the remote equipment to verify that
the proper signaling bits are received.
test tip-open
Provides battery on Ring and a high impedance on Tip. This is helpful when troubleshooting problems with
ground start interfaces.
tx-gain {-12.0 to 6.0}
Defines the transmit gain characteristics on the FXS interface. Transmit gain determines the amplification of
the received signal before transmitting from the FXS interface towards the network. By default, the tx-gain
is -6.0 dB.
