Cisco 72-0740-02 V.35 DCE Cable Rev B1 AMP Female to 50-Pin Male 9ft

Cisco 72-0740-02 V.35 DCE Cable Rev B1 AMP Female to 50-Pin Male 9ft

This is a Cisco 72-0740-02 V.35 DCE serial cable, Revision B1, used to connect WAN serial interfaces on Cisco routers to DCE network equipment such as CSU/DSUs and data service units. One end terminates in an AMP Female (V.35 block-style) connector and the other in a 50-Pin Male connector, at an approximate cable length of 9 feet.

Specifications & What's Included

• Manufacturer: Cisco
• Part Number: 72-0740-02
• Revision: Rev B1
• Interface Standard: V.35
• Signal Role: DCE (Data Communications Equipment)
• Connector A: AMP Female (V.35 34-pin block style)
• Connector B: 50-Pin Male
• Approximate Length: 9 ft (~2.7 m)
• Cable jacket: dark teal/gray, intact and flexible
• Includes: cable only

Applications

V.35 is a wide-area network (WAN) serial interface standard that was widely used throughout the 1990s and into the 2000s to connect routers to CSU/DSUs and leased-line WAN equipment running at speeds from 56 Kbps up to 2 Mbps or higher. Cisco used the 72-0740-02 DCE cable on routers such as the 2500, 2600, 3600, and 4000 series, where the DCE end clocks the WAN serial link — making it common in lab environments and back-to-back router setups. While newer WAN technologies have largely replaced V.35 leased lines in production networks, these cables remain in steady use for Cisco router labs, CCIE/CCNA training setups, legacy telecom connections, and equipment testing environments where V.35 serial interfaces are still present.