I have a 2811 Router with a FXS unit installed. I have set up a POTS line on one port and assigned a DID to it. I have plugged an old analog phone into the port for testing purposes and it is known good. It has a light that flashes when a call is incoming.
Currently my issue is that I can call the number and the light flashes on the phone but there is no ring... I can pick up the reciever and the call connects. If I hang up and pick up the reciever on the analog phone like I am placing a new outgoing call I have no dial tone.
I am wondering if I have a bad port on the FXS card.
The phone might not be sensitive enough to the ring voltage from the FXS port.
The ringer circuit is some older phones places a considerable load across the line and depending on the model of the FXS card, the ring voltage may be less than what the PSTN/central office provides (it is still with accepted tolerances).
If you have another handset (eg basic electronic type), give this a try.
If you don't get dial tone, do you have 'direct-inward-dial' configured under the POTS dial peer ? If so, remove it.
Otherwise post you config and SH diag so we know he hardware and how it is configured.
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