DM705-E&M – Interface module with 4 E&M ports
Submitted by zee on Wed, 11/12/2008 - 16:41. 
Imagem Pequena:
Introducao:
The DM705-E&M interface card is equipped with 4 voice ports that can operate over 2 or 4 wires. E&M signaling modes are types I, II, IV or V. It works with CAS signaling.
Caracteristicas:
- 4 voice channels per interface card, operating over 2 or 4 wires.
- RJ45 connectors.
- 600ohms or 900ohms line impedance (selectable via software).
- Voice channel frequency of 300-3400Hz with no compression – uses one 64kbit/s channel (timeslot).
- E&M signaling may set as type I, II, IV or V.
- Codification according to G.711, rule A.
- Transmission and reception gains are programmable from –4dBm up to +4dBm in 1dBm steps.
- CAS signaling.
- Standard test generator with error detector. Activated by the control port;
- Local digital loop and forced state generation (ON/OFF) on E and M terminals via control port commands.
- Can operate with CPU32, CPU64 or CPU128.