Installation Manual
Quidway R2600/3600 Series Modular Routers
Chapter 8
Function Modules
8-41
Table 8-28 Configuration of
1E1/2E1/4E1
DIP switches
DIP Configuration method Function description
ON
Connected to 75-ohm unbalanced
coaxial cable ( DB-15 to BNC)
1, 2, 3, 4
OFF
Connected to 120-ohm balanced
twisted pair cable
5: ON 6: ON RxRing are grounded directly.
5: OFF 6: OFF RxRing are not grounded.
5: ON 6: OFF
RxRing are grounded via 1UF
capacitor.
5, 6
5: OFF 6: ON RxRing are not grounded.
7: ON 8: ON RxShield are grounded directly.
7: OFF 8: OFF RxShield are not grounded.
7: ON 8: OFF
RxShield are grounded via 1UF
capacitor.
7, 8
7: OFF 8: OFF RxShield are not grounded.
Caution:
Please use the DIP switch 5, 6, 7, 8 according to the recommendation, and the personnel who haven’t
received training should not change the position of the DIP switches.
8.8.7 Connecting Interface Cable
Caution:
When connecting the cables, observe the identifiers on the interfaces to avoid wrong connection and
damage to the module and the router.
I. Connecting interface cable of 1E1 module
Step 1: Please plug the end of the 1E1 cable with the DB-15 connector to the E1
interface of the 1E1 module.
Step 2: Please connect the other end of the 1E1 cable to the corresponding equipment
cable:
z If the RJ-45 connector is used, directly connect it to the corresponding device.
z If the BNC connector is used, note that the cable labeled as TX should be
connected with a cable labeled as RX in the opposite equipment, and that the
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