Cisco LRE CPE, Руководство по установке оборудования

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B-3
Cisco LRE CPE Hardware Installation Guide
78-11469-04
Appendix B Connector and Cable Specifications
Connector Specifications
Figure B-2 WALL Port Connector Pinouts
PHONE Port
The PHONE port uses an RJ-11 connector. LRE operation only requires one wire
pair (pins 3 and 4) to carry LRE traffic. Therefore, you can use one-, two-, or
three-pair telephone cable. However, you must use a two- or three-pair cable for
telephones that carry power or other services. We recommend using a three-pair
telephone cable to connect a telephone to the CPE. (See
Figure B-6 and
Figure B-7 .)
Note Pins 3 and 4 are internally crossed between the CPE WALL port and the CPE
PHONE port on the Cisco 575 LRE CPE, the Cisco 576 LRE 997 CPE, and the
Cisco 585 LRE CPE devices.
Pins 1, 2, 5, and 6 on the WALL port of the Cisco 575 LRE CPE and the
Cisco 576 LRE 997 CPE are internally connected to the corresponding pins of the
PHONE port. (See
Figure B-3 .)
1 2 3 4 5 6
60542
Pin Label
1
2
3
4
5
6
Pass-through 6
Pass-through 5
LRE and phone ring
LRE and phone tip
Pass-through 2
Pass-through 1