<p dir="ltr">Hello</p>
<p dir="ltr">We have a location with a 2800 acting as a voice gateway where we have 2 FXS voice ports going to an alarm system. We are using the vic-4fxs/did line card.</p>
<p dir="ltr">We have the alarm company saying they are seeing the panel reporting Comm trouble so we checked the call records and we also did some debugging in realtime and we see the calls are going out and when we plug a test set in the dial tone is good.</p>
<p dir="ltr">In talking with the alarm company and researching we have come to believe the issue may be due to the idle and ringing voltages. We came across this link:</p>
<p dir="ltr"><a href="http://www.cisco.com/c/en/us/support/docs/voice/analog-signaling-e-m-did-fxs-fxo/28280-ring-idle-voltages-fxs.html">http://www.cisco.com/c/en/us/support/docs/voice/analog-signaling-e-m-did-fxs-fxo/28280-ring-idle-voltages-fxs.html</a></p>
<p dir="ltr">This looked promising however when we are in voice port configuration node we do not have the idle-voltage setting available. We tried several iOS versions in 12.4 as well as 15.x hut no luck</p>
<p dir="ltr">Is this line card not capable of -48 idle voltage? What cards are? Do we need anything special as far iOS version?</p>
<p dir="ltr">Ideally we want to have 2 voice ports that are as close to a standard pots line as possible.</p>
<p dir="ltr">We are a bit lost as its the first time we have hit an issue like this and we are just hoping someone has been down this path before. If we have to change line cards or even to another platform we are open to it as long if someone has a setup that is known working in this manner </p>
<p dir="ltr">Thanks in advance <br>
Chris </p>