Huawei Quidway R2600 Series

Installation Manual
Quidway R2600/3600 Series Modular Routers
Chapter 8
Function Modules
8-44
Figure 8-43 Appearance of 4BS
8.9.3 Interface Attributes
I. Interface attributes of 4BS
The interface attributes of 4BS are shown in the following figure:
Table 8-29 Interface attributes of 4BS
Attribute Description
Interface RJ-45
Number of interfaces 4
Protocols and standards ITU-T I.430, Q.921, and Q.931 compliant
Operating mode
---ISDN dialup
---ISDN leased line
Services supported
---ISDN
---Supplementary ISDN services
---Multi-user number
---Sub-address
---Backup
Protocols supported
---PPP over ISDN
---MP
---Q.921
---Q.931
II. Internal DIP switch
The purpose of the internal DIP switch in 4BS is to set the matched resistance on the
ISDN BRI S/T interface. The setting of this switch (DIP S1) decides if the matched
resistance on the ISDN BRI S/T interface is to be used. The method for setting the
default value for the switch is shown in the following figure, indicating that the four ISDN
BRI S/T interfaces all use the 100-ohm matched resistance value. All the digits on the
DIP switch are defined in the following table: