`- Compatible with fax machines and modem speeds up to 28.8 kbps
- Precise dial tone 32V DC talk battery
- Switch selectable ring cadence
- Provides CPC breaks after hang-up on either port
- Switch selectable audio attenuation
- Provides 2 seconds of precise dial tone after off-hook
- Provides ring back signal to calling device
- One or two way ring down capability
- Jumber selectable ring count
- Ring down and dial tone off mode (ideal for prison phone communications, etc.)