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Hitachi GR2000 User Manual

Page 195

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Figure 3-91 Sample Indirect Connection with Primary (I.431 or I.431-a)

Configuration Notes:

• Customer setup length L1, i.e., the total length of flat metal cables, should not exceed 16 m - L2.

addition, be sure to use the flat metal cable with the core diameter of 0.65 mm.

• The modular rosette is the customer responsibility, and hence not included in the router. Procure

that has the model name MJ-8S (no terminator).

Primary (1.431)
interface

Customer setup length L2
(cable with modulars on both ends)

Flat metal cable (4-wire)

Customer setup length L1 (with one modular rosette)

DSU

outer