3Com Router 3000 ADSL2+ Family
Installation Guide
1. Product Overview
1-9
1.3.4 Interface attributes
The Router 3041provides one console port, four 10/100 Mbps Ethernet ports, one ISDN S/T
interface, and one ADSL2+ over POTS interface. The following table describes the attributes of the
ISDN S/T interface.
Table 1-8
Attributes of the ISDN S/T interface
Attribute
Description
Connector RJ-11
Protocol and standard
ITU-T I.430, Q.921, and Q.931
recommendations
Operating mode
ISDN dial-up
ISDN leased line
Service
ISDN
ISDN supplementary services
Multi-subscriber number
Subaddress
Backup
