Frequency Response: 300Hz - 3.4kHz
Send Gain Control Range: +/-12dB
Receive Gain Control Range: +/-12dB
Ring Detect Sensitivity: Operates with most international telephone ring signal standards.
Auto-Mode Levels: -12dBv on intercom line for -9dBm on telephone line; -27dBm on telephone line for -12dBv on intercom line.
Dial Tone: 350Hz + 440Hz, continuous
Busy Tone: 480Hz + 620Hz, 0.5 sec on / 0.5 sec off
Reorder Tone: 480Hz + 620Hz, 0.25 sec on / 0.25 sec off
Loop Current Interruption: >5 ms
DC Isolation: >10M Ohms between each telephone line and the IMF interface frame.
Current Required: +370mA /-130mA
Connectors (via IMF Frame)
To Matrix Frame: (2) RJ45
DB-9M Connector: (2) telephone line connections (2) for relay contacts
Relay Contacts: Type “A1”, “Dry”, normally open when TEL-14 is on-hook