Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

SPA 3102 cant' detect PSTN line

I have had 3102 for two years now, and has been using SIP connection all the time  with no problems.

Today I tried to add PSTN  that is provided by Comcast ARRIS modem. SPA won't detect line as active. I implemented dialing rules and am getting busy tone if it is routed yo PSTN. If I disconnect the internet cable from SPA it does not have any choice and only then will connect to the analog line'. In this case it works fine. What do I have to do so I get borh connections recognized and working obeying dialing rules. I called techsupport but they would not help me because I have had the device longer than a year. I assume that voltage provided to PSTN connector is low (not even close to standard 48v) and that is cause of the trouble.

CreatePlease login to create content