Installation manual

3-8 Installation and Replacement
Installing The Vanguard 3400 Series
Caution
Do not connect the Ports 4, 23, 24, 25, 26, or 27 to the Public Communications
Network.
Note
When installing a daughtercard with only one port, the port number is 7 or 10
(depending on the location of the card).
Rear Panel Ports There are up to seven physical ports on the Vanguard 3400 Series rear panel. Some
physical port numbers may vary from model to model.
Port 1
Port 1 is either a Universal Serial Port (D
B25 connector) which can be configured to
support V.11/X.21, V.24/RS232, V.35 and V.36 DCE, or an RS232 only interface.
Note
Cable Adapters are required when using V.11/X.21, V.35, or V.36.
Cable Adapters and Special Cables
To emulate a high speed DTE interface V.11/X.21, V.35, or V.36 on any 3400 Series
Universal Serial Port requires the use of a Cable Adapter (Figure 3-4) and special
cables.
Figure 3-4. Cable Adapters
The table below provides a description with pa
rt
numbers of the Cable Adapter and
special cables. The paragraphs that follow provide more detailed information and
pinouts.
1152-10021
REV. 1
V.35
V.36
1152-10022
REV. 1
V.11
X.21