V.35 Network Interface - PictureTel Concorde 4500 Servicing Manual

NETWORK INTERFACES

V.35 Network Interface

3-6
Table 3-1: Signal Flow for the Switched-56 Network
Interface Board (Continued)
Signal Description
CTS Clear to send
TXD Transmit data
RXD Receive data
NS No signal
ITU-T V.35 is one of the most commonly used network interfaces in
the United States. The V.35 network interface board has two V.35
data ports which are used for connecting to switched networks.
The ITU-T V.35 network interface operates at data rates from 56 to
768 kbps.
A Concorde¥4500 conÞgured with a V.35 interface supports
integrated services digital network (ISDN) terminal adaptors and
other networking terminating equipment, such as modular
processor data modules (MPDMs). Connections to high-speed
interface boards in T1 and other multiplexers are also supported.
The following are guidelines for connecting the V.35 network
interface board to the network:
Cable length must not exceed 30.5 meters (100 feet) between the
system and the network (with any bit rate).
Use a Belden type 9732 cable or equivalent.
Provide an M-34 male connector.
Use a DC-37P connector because of its superior EMI
suppression.
PictureTel provides RS-366 cables necessary for dialing with this
network interface, as well as the two female DC-37 to M-34
conversion adapter cables for the V.35 data ports. The adapter cables
are used to send and receive data for each of the two data ports. The
adapter cables are connected to the male DC-37 connectors on the
electronics module (see Appendix B.)
Direction of Flow
CSU board <---->CP
<Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ
ÐÑ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ>
<Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ
<Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ Ñ