TC Communications T3/E3, Fiber Optic Modem w/ RackmountCondition:* New, Surplus Stock. Additional Notes:* Contains: (2x) TC1680 T3/E3 Fiber Optic Modem And (1x) TCRM195 19” Wide 1U Rackmount Card Cage TC1680 * The TC1680 is ideal for T3/E3 connectivity applications up to distances of 100km, including replacing coaxial cable with fiber, extending the point of presence from Telco demarcation points and ATM nodes, transmitting digitized video and linking metallic media T3/E3 multiplexers.* The TC1680 T3/E3 Fiber Modem features built-in self/link testing to provide a high-speed, point-to-point data link between two DS3 or G.703 conforming devices.* Built-in Self Test & Link Test* Multi-mode or Single Mode Fiber Compatible (1300/155nm)* Single or Dual Fiber Variants* Power Redundancy* Optional Optical Redundancy* Low Power Consumption* Local & Remote Loopback* Conforms to ANSI T1.102-1993, TR-TSY-000499, and CCITT Standards* Data Rates: T3 – 44.736 Mbps E3 – 34.368 Mbps* Fiber Optic Connectors: STTCRM195* 1U High (1.75″) – TCRM195/196* Depth: 9″* Dual Power Capability with Automatic Switchover In The Event of Failure (Currently Available on TCRM191/192)* Universal Switching Power Supply Accepts 90 To 264 Volt AC (47 to 63 Hz), NO Power Cord Included* Optional 24 Volt DC, -48 Volt DC or 125 Volt DC Power Supply, NOOptional Power Supply Included* Overload & Short-Circuit ProtectionTC CommunicationsTC1680TCRM195