V.54 annex b (rdl) loop, Power bypass, Warranty – Verilink S Lite (CG) Configuration/Installation Guide User Manual

Page 2: Returning products

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V.54 Annex B (RDL) Loop

Manual Loop

This loop
is acti-
vated by
setting DIP switch S1-1 to the B position. This
loop is unidirectional and returns the DCE re-
ceive data to the DCE transmit data. The loop
functions as shown above.

Detect Mode

This loop is activated by the receipt of the V.54
Annex B--commonly known as RDL--loop
command. This loop is unidirectional and re-
turns the DCE receive data to the DCE transmit
data. The loop functions as shown above.

The loop-up code is 2048 ± 100 bits of V.54
loop-up pattern. When this is detected, the unit
is looped. The loop-down code is 8192 ± 100
bits of V.54 loop-down pattern followed by 64
ones.

Power Bypass

The S Lite can operate in a power bypass mode
where the S Lite passes the signal from the net-
work to the equipment and vice versa whether
in a powered state or not.

The power bypass mode uses relays that switch
the network and equipment connections. When
the unit is powered and stable, the relays have
the network and equipment connections
switched into the S Lite’s internal circuitry.
When the unit loses power, the relays switch
the network connection to a direct connection
path to the equipment connection. When power
is reestablished the relays switch the network
and equipment connections back into the
S Lite’s internal circuitry.

Warranty

Verilink's product warranty covers repair or re-
placement of all equipment under normal use
for a five-year period from date of shipment.
Replacement products may be new or recondi-
tioned. Any replaced or repaired product or
part has a ninety (90) day warranty or the re-
mainder of the initial warranty period, which-
ever is longer. Our in-house Repair Center
services on a standard 10-workday-turnaround
basis.

Returning Products

A product must be assigned a Return Materials
Authorization (RMA) number before it is sent
to Verilink for repair. An RMA number is is-
sued by Verilink Customer Service at (800)
926-0085, ext. 2282.

DTE

DCE

S Lite

127 Jetplex Circle

Madison, Alabama 35758

(800) 837-4546

www.verilink.com

Technical Assistance Center

(800) 285-2755

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