Hello. I am experiencing few problems with Linksys SPA-3102 and External Extensions. Problem 01: Just installed Linksys SPA-3102. 3CX forum was great help for me to install the device. Thank you every one. I am able to receive incoming calls through Linksys SPA-3102 and Auto Attendant (800 in my 3CX settings) is picking up, no problem with incoming calls. I am unable to make any calls from any of the extensions using Linksys SPA-3102. I made outgoing call rules, where # 8 before any number(s) dialed should route the call(s) through Linksys SPA-3102. Unfortunately out going is not working at all. Below are the settings in Linksys SPA-3102: Linksys SPA-3102 PSTN Line: http://people.stu.ca/~nahid/others/3cx/Linksys_3102_PSTN_06AUG2007.pdf Linksys SPA-3102 Line 1: http://people.stu.ca/~nahid/others/3cx/Linksys_3102_Line1_06AUG2007.pdf Problem 02: I am unable to use the External Extensions properly. Extensions will register, but no AUDIO either way. I have opened ports 7000-7500, 9000-9049, 3478, even 16000-16999. Nothing is giving AUDIO either way. Tried to use STUN server 184.108.40.206 with no luck. D-Link DI524 Firewall DMZ has the 3CX server computer open to internet. No Luck. The error I am getting is - “in-band DTMF tone detection is turned off”. Please advice. Thank you in advance for all the help.