# Special on-hook receive specifications for loop start

The loop start interface can be used in applications to record live telephone calls such as emergency calls or financial transactions. Special regulations require that parties be notified that they are being recorded. Check with authorities in the locality where the application is to be installed to determine what is permitted in that area.

The system cannot generate tones in this mode. The notification must be verbal.

DC tip to ring resistance | > 1 M Ohms
Audio tip to ring impedance | > 10 k Ohms
Typical receive audio loss @ 0 db line gain and 600 termination | 11 dB

The impedance of the agent's telephone and length of loop cable will affect the audio loss.