Major features
- Supports 8/5/2 E1 interfaces, corresponding to 4/2/1 dispatch loops.
- Supports power-fail bypass for E1 links (1↔2, 3↔4, 5↔6, 7↔8).
- Provides 256/128/64-party conference capability, with up to 64 parties per loop.
- Supports system clock synchronization.
- Supports active/standby protection for connection ports.
- Supports online software upgrade.
- Built-in DIP switches for dispatch loop address configuration.