SPA2102 VoIP ATA ports blocked by E4200 Cisco Router

macthelion · ‎03-19-2011

The Cisco E4200 Wireless router seems to block UDP ports to/from a Linksys SPA2102 ATA VoIP adapter.I tried enabling SIP ALG and still lost dial tone by morning. I tried looking at the Admin logs to see which inbound / outbound ports are being blocked but the log functions on this router only seems to display outbound information with no specifics as to what ports or protocols are being blocked and for what reasons.

Does anyone on this forum know what configurations to change on the E4200 to allow the transparent operation of the SPA2102 VoIP ATA behind it?

Any hope Cisco will fix the E4200 log functions to display useable and meaningful information needed to setup Application specific configurations?

My original question was posted in the home community because it seemed more appropriate and was closed / redirected;

http://homecommunity.cisco.com/t5/Wireless-Routers/E4200-SIP-ports-blocked-to-from-Linksys-SPA2102-VoIP-ATA/td-p/386343