Belden-NP291 Banana Peel Plenum

DS-3 & DS-4 Coax Cables Silver-plated Copper Conductor Foam FEP Insulation • White Flamarrest® Jacket

DS-3 &DS-4

Belden- 735AS3P  SPC  Awg26  3C

Belden- 735AS6P  SPC  Awg26  6C

Belden- 734AS3P  BC  Awg20  3C

Belden- 734AS6P  BC  Awg20  6C

Belden Introduces a New Series of Coax Composites
Specifically Designed for Central Office and Data
Center Digital Signal (DS)
Interconnect and Crossconnect
Applications

Belden, the cable technology leader in
high-speed data transmission, introduces
new plenum DS-3 and DS-4 coax cables for
use in telco and data center networks, as well
as other large and complex installations.
　

The great ease-of-installation of these new
bundled coax products is derived from Belden’s
proprietary Banana Peel construction. They
are available in two sizes, 23 AWG (735A
plenum-rated) and 20 AWG (734A plenumrated),
each size offered in a 3-count and
a 6-count configuration. Both sizes are
UL-approved and all of the new cables
conform to the requirements of Telcordia
GR-139-CORE.
　

DS-3 and DS-4 Transmission Formats
Digital Signal Level 3 (DS-3) and Level 4
(DS-4) are the transmission formats used
in telephone equipment to carry traffic in
Central Office facilities. DS-3 is a signal
capable of 672 multiplexed voice channels,
or 28 T-1s. DS-3 systems operate at a
transmission rate of 44.736 Mb/s and
a frequency of 22.368 MHz. DS-4 has a
channel capacity of 4,032 voice channels,
a transmission rate of 274,176 Mb/s,
and a frequency of 137.088 MHz.
　

DS-3 and DS-4 Cables

Telcordia GR-139-CORE (Generic Requirements
for Central Office Coaxial Cable)
is the standard that contains and defines
the requirements for coax cable utilized in
DS-3 and DS-4 systems. 734A* and 735A*
are industry references for coax made for
central office applications.
　

Cross-connect or
Interconnect Applications

Cross-connect or interconnect applications
are those within a DSX. A DSX frame is an
array of equipment operating at a particular
digital transmission rate. Interconnect cables
carry signals between a DSX and a multiplexer
or other transmission equipment. Digital
Multiplexers (MUX) combine and de-combine
individual voice channels for transmission or
distribution. DS-3 and DS-4 signals are also
carried within and between patch panels,
transmitters, receivers and telephone switches.

Belden’s Banana Peel Feature
Means Time and Labor Savings

The proprietary Banana Peel construction
in Belden’s new network coax decreases labor
time and costs by dispensing with the outer