Cabling and Connector Specifications
Serial WAN (SWAN) cable specifications
MAX TNT Hardware Installation Guide
B-15
E1/PRI WAN ports
Table B-15 lists the pins on RJ-48C sockets used for E1/PRI WAN interface on the MAX TNT.
Only pins 1, 2, 4, and 5 are used. The remaining pins are not connected.
Note:
E1/PRI models are also equipped with BNC connectors.
Serial WAN (SWAN) cable specifications
A MAX TNT unit’s serial WAN (SWAN) interface supports dedicated connections to the
WAN. Data packets from the MAX TNT bridge or router module can use this interface, but bit
streams from devices connected to the unit’s serial host ports cannot.
The MAX TNT unit’s serial WAN port is compatible with the following two electrical
standards:
•
V.35
•
RS-449/422
In the cable wiring tables that follow, a MAX TNT unit is the Data Terminal Equipment (DTE)
that connects to a Data Circuit-terminating Equipment DCE) device
through its serial WAN
port. The unit receives the Send Timing and Receive Timing clocks from the DCE device.
V.35 cable to WAN
You can connect a V.35 cable (TNT-CAB-v35) to the V.35 port of a DCE device. The V.35
cable has the pinouts described in Table B-16.
Table B-15. Transmit and Receive pins
MAX TNT E1/PRI interface
RJ-48C DTE
Receive (input) pair, Tip (T1)
Receive (input) pair, Ring (R1)
Position 2
Position 1
Transmit (output) pair, Tip (T)
Transmit (output) pair, Ring (R)
Position 5
Position 4
Table B-16. V.35 cable pinouts
Pair #
Signal
MAX TNT male
DB-44
Host male V.35
1
FGND
RI
1
8
A
J
2
SD+
SD-
39
40
P
S
