Hi,
This is Chandra. I am expertise in Asterisk/Trixbox softPBX. I have lot of experience in VoIP/PBX/PSTN/ISDN, Intercom, Ring groups, Connecting multiple servers, IPForwarding, Trunks creation and configuring and many more. You can see my profile in this for complete list of projects. Here, I mentioned the maximum days to complete your project. Before finalizing the project duration (12 days), you have to tell me your complete requirements. I assure that complete your project within timeline. I can give longterm support also. Looking forward to your response.
Thank you.
Regards,
Chandra.