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182 CHAPTER 4: FLEXIBLE INTERFACE CARDS
Jumper Settings The FIC-4BSE uses jumpers to set matched resistance for ISDN BRI S/T interfaces.
The use of 100-ohm resistance on an ISDN BRI S/T interface depends on jumper
settings. The following figure shows the jumper settings, where all the ISDN BRI
S/T interfaces are using 100-ohm resistance.
Figure 224 Jumper settings of the FIC-4BSE (example)
The following table describes how to set jumpers.
Cable ISDN S/T cable
Protocol & standard ITU-T I.430, Q.921, Q.931
Operating mode ISDN dial-up
ISDN leased line
Supported service ISDN
ISDN supplementary services
Multi-user number
Sub-addressing
Backup
Table 126 Interface attributes of the FIC-4BSE
Attribute Description
S1
S2 S3
S4 S5
S6 S8
S7
23
01