3Com 3C13755-US - Router 5642 Installation Manual page 23

Features
Front Panel and LEDs
Table 18 lists features of the 2-port ISDN S/T SIC and 2-port ISDN U SIC.
Table 18 Features of the 2-Port ISDN S/T SIC and 2-Port ISDN U SIC
Feature
Connector type
Number of connectors
Cable type
Protocol standard
Operation mode
ISDN leased line mode
ISDN
Multi-user number
Backup
PPP over ISDN
Q.921
Figure 20 illustrates the front panel of the 2-port ISDN S/T SIC.
Figure 20 Front Panel 2-Port ISDN S/T SIC
Figure 21 illustrates the front panel of the 2-port ISDN U SIC.
Figure 21 Front Panel 2-Port ISDN U SIC
2-port ISDN U SIC
Description
RJ-45
2
Telephone cable with ferrite core
Comply with the ITU-T I.430, Q.921, and
Q.931 Recommendations.
ISDN dialing mode
Supported service
ISDN complementary services
Sub-address
Supported protocol
MP
Q.931
21