ZL81000 Overview
ZL81000 provides two DS1/E1/2048kHz transceivers (transmitters plus receivers) specifically designed for BITS/SSU timing in carrier-class telemunications equipment. Each transceiver provides full support for DS1, E1 and G.703 2048kHz synchronization signals in and out and includes SSM message insertion and extraction. The device also includes two posite clock (CC) receivers and two general-purpose CMOS clock inputs...
ZL81000 Key Features
- Two Independent Multi-Protocol BITS/SSU Transmitters and Receivers
- Receive and transmit DS1, E1, 2048 kHz, and 6312 kHz timing signals
- Insert and extract SSM messages (DS1, E1)
- DS1 SF or ESF formats
- E1 FAS, CAS and/or CRC-4 framing
- J1 support (DS1 with Japanese CRC-6 & RAI)
- Short-haul and long-haul line interfaces
- Internal software-selectable termination (75, 100, 110, or 120) or external termination
- High-impedance receive inputs and transmit outputs for no-relay redundancy
- Local and remote loopbacks