I did a few searches and did not find the answers I am looking for. I am a Cisco / Microsoft engineer, but new to Asterisk, just started looking at it today.
My company has a Siemens 9751 (20 years old or so) existing phone switch, two long distance T1s, and maybe 500 phone lines. We do not have Ethernet everwhere where there is a phone, and it would be difficult to change that, so internal use of Asterisk may not be viable right now.
My question is… Can I use Asterisk to off-set our external long distance charges using VOIP to potentially augment or replace our long distance T1s? We have a business class Road Runner circuit providing about 15Megabit of Internet access that we are not fully using, and I would like to leverage this.