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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
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Chapter 3 Overview: Cisco ASR 1000 Series Aggregation Services Routers SPAs
4-Port Serial Interface SPA Overview
• EIA/TIA-530
• EIA/TIA-530A
• X.21
The 4-Port Serial Interface SPA provides up to four synchronous serial interfaces. Each port allows a
maximum bandwidth of 8064 Kbps except for the X.21 and EIA/TIA-232 interfaces.
Use EIA/TIA-232 for speeds of 128 kilobits per second (kbps) and below. Use X.21 for speeds less than
2 Mbps. Use EIA/TIA-449, V.35, EIA/TIA-530, or EIA/TIA-530A for higher speeds.
4-Port Serial Interface SPA Cables, Connectors, and Pinouts
The 4-Port Serial Interface SPA uses Smart Serial cable interfaces that support two independent serial
interface ports. The serial end of the Smart Serial cable is a 26-pin connector.
Table 3-38 lists the 4-Port Serial Interface SPA cable interfaces.
Table 3-38 4-Port Serial Interface SPA Cables
Product Number Cable Type Length Connector Type
CAB-SS-V35MT V.35 DTE 10 feet (3 meters) Male
CAB-SS-V35FC V.35 DCE 10 feet (3 meters) Female
CAB-SS-232MT EIA/TIA-232 DTE 10 feet (3 meters) Male
CAB-SS-232FC EIA/TIA-232 DCE 10 feet (3 meters) Female
CAB-SS-449MT EIA/TIA-449 DTE 10 feet (3 meters) Male
CAB-SS-449FC EIA/TIA-449 DCE 10 feet (3 meters) Female
CAB-SS-X21MT X.21 DTE 10 feet (3 meters) Male
CAB-SS-X21FC X.21 DCE 10 feet (3 meters) Female
CAB-SS-530MT EIA/TIA-530 DTE 10 feet (3 meters) Male
CAB-SS-530AMT EIA/TIA-530A DTE 10 feet (3 meters) Male
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