Installation & Connections Shelf and Card Connections
2-6 SpectraComm IP T1 Router Card 076R200-000
Installation and Operation Manual Issue 13
Sync/Async Port
(Interface “B” in
)
This shared port employs an straight-thru interface cable (S-078H010-XXX) and an 8-pin modular
to DB25M adapter (209-036-036) to connect an external modem (async interface) or a DSU/MUX
(sync interface).
describe cable connections and pinouts for port “B”.
• When enabled as a S1 (serial 1) interface, this port can support a synchronous connection to a
SC521A device for DDS network connections.
• (Future feature) When enabled as an AUX1 interface, this port can support an asynchronous
connection to an external modem.
Figure 2-3
Sync and Async Port Connections
Note
When a serial1 or aux1 interface is enabled, RTS is forced ON. When both are disabled, RTS is forced OFF.
Table 2-4
Sync/Async Port Pinouts
RJ45 Pin
Signal DB25M Pin
1
Tx Clk
15
2 DCD 8
3
Rx Clk
17
4
GND
7
5
RxD
3
6
TxD
2
7
CTS
5
8
RTS
4
CONNECTION OPTIONS
B
PIN 1
Adapter Detail
209-036-036
Sync or
Asyn Port
SCIP Rear Panel
Configured as
Synch Port
Configured as
Async Port
Rear
View
ADAPTER
209-036-036
(See Detail)
B
Serial 1
Port
B
AUX 1
Port
PIN 1
13
14
25
DSU
or MUX
S-078H010-XXX
Interface Cable
External
Device
ADAPTER
209-036-036
(See Detail)
S-078H010-XXX
Interface Cable
External
MODEM
Summary of Contents for SpectraComm IP T1
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