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3-9
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
OL-14126-03
Chapter 3 Overview: Cisco ASR 1000 Series Aggregation Services Routers Shared Port Adapters
4-Port Serial Interface SPA Overview
Figure 3-4
Smart Serial Cable Connectors
lists the connector pinouts for the Smart Serial connectors that interface at the 4-Port Serial
Interface SPA ports.
Router connections
EIA/TIA-449
V.35
X.21
Network connections at the modem or CSU/DSU
205059
EIA/TIA-232
EIA-530
Table 3-7
Smart Serial Connector Pinouts
Pin
Signal
Pin
Signal
1
O_TXD/RXD+
14
O_TXD/RXD-
2
O_TXCE/RXC+
15
O_TXCE/RXC-
3
B_TXC/TXC+
16
B_TXC/TXC-
4
I_RXC/TXCE+
17
I_RXC/TXCE-
5
I_RXD/TXD+
18
I_RXD/TXD-
6
B_DCD/DCD+
19
B_DCD/DCD-
7
O_DTR/DSR+
20
O_DTR/DSR-
8
O_RTS/CTS+
21
MODE2
9
O_RTS/CTS-
22
MODE1
10
I_CTS/RTS-
23
MODE0
11
I_CTS/RTS+
24
MODEDCE