Enterasys Networks 700 - Manual (Page 172)

WAN Configuration
7-2 About the DELHW-UA
Port interface modules available for the DELHW-UA include:
DELDS-UI DDS is Digital Data Services, a digital network that
supports data rates of 56Kbps or 64Kbps. The DDS
service provides users with dedicated, two-way
simultaneous transmission capabilities operating at
transfer rates up to 64 Kbps. This port module comes
with a built-in CSU/DSU.
DELDI-UI The DI (Drop-and-Insert) port interface module provides
a T1 interface through a front-panel RJ45 port and
includes a built-in CSU/DSU for direct connection to a
T1 line. The DELDI-UI provides Full T1 or Fractional T1
using 56 or 64 Kbps Time Slots. It also provides a second
Drop-and-Insert interface that allows more than one
device, such as a PBX, to share a single T1 connection.
DELE1-UI This port interface module provides an E1 interface
through a front-panel RJ-45 port and includes a built-in
CSU/DSU for direct connection to an E1 line. It provides
Full E1 or Fractional E1 using 56 or 64 Kbps Time Slots
with a total throughput of up to 2 Mbps. Time Division
Multiplexing (TDM) allows for the channelization of up
to 31 links of a single physical interface.
DELST-UI This port interface module provides an ISDN 128 Kbps
Basic Rate Interface (BRI) and is designed for an ISDN
back-up link for a frame relay or leased line. In the
United States and Canada, Network Terminator
equipment (NT1) is required to provide an interface
between the DELST-UI and the ISDN line.
DELSY-UI Provides a synchronous serial connection of up to 2.048
Mbps to external communications equipment (an
external CSU/DSU is required). An external CSU/DSU
is required; the following electrical interfaces are
supported (consult your hardware documentation for
cable pinout information):
EIA-RS449
V.35
EIA-RS232D
X.21
EIA-RS530
EIA-530A
RS530 ALT A
RS530A ALT A
DELT1-UI Provides a T1 interface through a front-panel RJ45 port
and includes a built-in CSU/DSU for direct connection to
a T1 line. The DELT1-UI provides both Full T1 or
Fractional T1 using 56 or 64 Kbps Time Slots, with a total