Castelle FaxPress Specifications download pdf (Page 645)

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Appendix E: The FaxPress 7500-DID and E&M

E—7

Interface Connections

The FaxPress 7500 DID has two separate sets of interface connections, the fax

server interface and the DID conversion interface.

Fax Server Interface

All eight lines of the fax server of the FaxPress 7500-E&M can be connected to

public regular telephone lines. Eight RJ11 phone jacks marked as LINE 1 to LINE

8 on the front panel and eight phone cables are provided for the phone line

connections. These eight phone line cables are 4-conductors, straight through

cables, which means pin 2 of the RJ11 plug of the cable connects to pin 5 of the

RJ11 plug on the end of the cable, pin 3 connects to pin 4 …and so forth.

Up to four of the eight fax server lines can be connected to the E&M converter for

the connections to the E&M trunk lines. The user can use any four of the eight

RJ11 phone jacks marked as LINE 1 to LINE 8 on the front panel and any of the

four phone cables as mentioned above to connect to the RJ11 phone jacks of the

E&M interface converter marked as LINE A, LINE B, LINE C, and LINE D.

E&M Conversion Interface

The E&M converter provides four E&M trunk line interfaces. Four 6-position

phone modular connectors marked as TRUNK A, TRUNK B, TRUNK C, and

TRUNK D are provided on the front panel and four phone line cables are provided

for the E&M trunk connections. These four phone line cables are 6-conductors,

cross-wired, which means pin 1of the phone plug of the cable connects to pin 1 of

the plug on the end of the cable, pin 2 connects to pin 2 …and so forth.

The phone connectors marked as TRUNK A and LINE A on the front panel are

the matched pair of the E&M trunk interface and the fax server line interface. This

is the same for TRUNK B and LINE B, TRUNK C and LINE C, and TRUNK D

and LINE D.

The FaxPress 7500 E&M requires a ground loop connection with the E&M PBX.

The preferred ground connection for the FaxPress 7500 E&M is a 4-40 screw

marked with “GROUND” on the bottom panel of the chassis.

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Castelle FaxPress Specifications Page 645

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