SIP Devices unable to stablish PSTN calls

I was just reading the following Article and wanted to add few things that helped me solve my issue: http://uctickets.wordpress.com/2014/03/21/11-sip-9971-phone-unable-to-complete-pstn-calls/ *** bearer-cap speech *** This simple command also fixed an issue I had with Jabber clients calling from Softphone mode to cellphones, and they were getting straight to the voice mail of that particular cellphone. […]