Application

The LT8800 is typically used to link or extend data and telephone lines in campus networks. In many instances the LT8800 can replace expensive channel banks.

Description

The LT8800 is a 4-to-28 channel telephone and data fiber optic multiplexer that extends multiple telephone lines and data channels to remote sites such as other buildings in campus networks. The LT8800 Series consists of LT8800 (FXS), LT8801 (FXO), and LT8802 (Data). Users can mix or match telephone channels or RS-232, RS-422, TTL and Dry Contact Interfaces in increments of four up to a maximum of 28 channels. For example, a user could multiplex 20 telephone channels and 8 RS-232 data channels.

The LT8800 Series converts 2-wire FXS to fiber optics on the telephone side with ring down capability and FXO on the PBX side. Distances up to 80km are typical over single mode fiber, 4km over multimode fiber. Because the LT8800 digitizes the analog signals (PCM), voice quality does not degrade over extended distances.

It supports Telephone channels from 300Hz to 3.4Khz and asynchronous data rates to 19.2 Kbps. Twelve LEDs are available for status monitoring and diagnostics. A dry contact alarm is optional. Diagnostic LEDs for each channel include Tx, Rx, Hook and Ring.

The LT8800R PC Card version requires the LTRM191 or LTRM195 19" Rackmount Card Cage. Each LT8800R card can be removed or installed on the LTRM191 without powering down the system ("hot-swappable"). The LT8800S Standalone version currently supports up to 8 telephone or data channels. An extreme temperature version (-20°C to 70°C), LT8800T, is also available.

The LT8800 Series works with all types and sizes of multimode or single mode fiber optic cable at 850/1300/1550nm. Fiber optic connectors are ST or FC. RJ-11F ports are provided on the rear side to connect with telephones. Power redundancy is standard; optical redundancy is optional. Power is 12Vdc; 115/230VAC and 24VDC are optional.

Specifications