Huawei RT-1E1 Specifications page 3

Quidway® AR 28 Router E1 Interface Module
Properties
Interface cable
75 ohm 8E1 transit cable
type
E1, CE1 and ISDN PRI (only supported by FIC-8E1)
Working mode
FE1 (only supported by FIC-8E1-F)
Backup
Service supported Terminal access service
ISDN PRI (only supported by FIC-8E1)
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8E1/8E1-F module (75 ohm)
Description
8E1/8E1-F module (120 ohm)
120 ohm 8E1 transit cable
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