Nx Networks 3000 - Manual (Page 48)

Monitoring Your 3000 Series Secure Gateway Router
34 3000 Series User Guide
Voice Ports
There are four lights on the front panel that indicate the status of the voice
ports. Analog voice modules can have either two or four ports. Lights V1 and
V2 apply to the two-port model. Lights V1, V2, V3, V4 apply to the four-port
model.
Light State Indicates . . .
V1, V2,
V3, or V4 On
Off Call is active
Call is not active