3Com 3C13755-US - Router 5642 Installation Manual page 48

46 C 3: I
HAPTER NTRODUCING
Features
Internal DIP switches
R 5000 F MIM
OUTER AMILY S
The interfaces of the 4-Port ISDN S/T MIM ISDN S/T BRI are arranged according to
the following rules:
The first interface is BRI0.
Interfaces for the first 4-Port ISDN S/T MIM are numbered from BRI0 to BRI3.
Interfaces for the second 4-Port ISDN S/T MIM are numbered from BRI4 to
BRI7, and so on.
Figure 50 illustrates the 4-Port ISDN S/T MIM.
Figure 50 External Appearance of 4-Port ISDN S/T MIM
Attributes of the 4-Port ISDN S/T MIM
Table 38
Attribute
Connector
Number of connectors
Cable
Protocols and standards
Operating mode
ISDN leased line
ISDN
Multi-user number
Backup
PPP over ISDN
Q.921
The purpose of the internal DIP switch is to set the matched resistance on the ISDN
BRI S/T interface. The setting of this switch (DIP S1) determines whether the
matched 100-ohm resistance on the ISDN BRI S/T interface is used. By default, all
DIP switches are turned on.
Description
RJ-45
4
ISDN S/T cable
ITU-T I.430, Q.921, and Q.931 compliant
ISDN dialup
Services supported
Supplementary ISDN services
Sub-address
Protocols supported
MP
Q.931