ADTRAN /FXS/FXO 850 Quad Job Aid Download Page 2

CONNECTIONS

All connections are made through the 50-pin amphenol connector on the back panel 

TA 750/850/1500.

ELECTRICAL CODE COMPLIANCE

The Quad FXS and Quad FXO are to be installed in restricted access locations and in equipment
with a Type “B” or  “E” installation code. 

Code

Input

Output

IC

A

TC

X

PC

C

C

APPLICATIONS

This device complies with Part 15 of the FCC rules.  Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by ADTRAN could void the user’s authority to
operate this equipment.

PRICING AND AVAILABILTY     800.827.0807

TECHNICAL SUPPORT  888-4ADTRAN

RETURN FOR REPAIR    256.963.8722

www.adtran.com

TOTAL ACCESS 750 QUAD FXS/FXO

MODES OF OPERATION

Note:

Signaling states are provisioned through the BCU.

FXS

FXS 

Loop Start (default)

FXS 

Ground Start

TR-08 Single Party

TR-08 Universal Voice Grade

DPO

Tandem (E & M)

FXO

FXO 

Loop Start (default)

FXO 

Ground Start

DPT

ATTENUATION LEVELS

0 dB to -9 dB

FXS

Short loop default:  -6 dB Transmit, –3 dB Receive

Long loop default:  -3 dB Transmit, –3 dB Receive

FXO

Default 

0 dB Transmit, 0 dB Receive 

IMPEDANCE SETTINGS

FXS

600 

900 

600 

+ 2.16 µF (short loop default)

900 

+ 2.16 µF (long loop default)

FXO

900 

+ 2.16 µF 

WARRANTY

Warranty for Carrier Networks products manufactured by ADTRAN and supplied under
Buyer's order for use in the U.S. is ten (10) years. For a complete copy of ADTRAN's U.S.
Carrier Networks Equipment Warranty:  (877) 457-5007, Document 414.

Router

Switch

GR303 Access 

Concentrator

Data Switch

DCS

Switch

Switch

DS1

DS1

TDM

GR303

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