I have a good understanding of VoIP and how it works and all. I am planning on creating a gateway, but I need a couple hardware/software questions answered before I waste too much time diving into it. Also, if anybody has a sample of how they configured a Linux VoIP gateway it would help.
Scenario: I am going to create an internet VoIP gateway using Linux. I am going to have a public interface, and then a modem to PSTN.
Question 1: Are you able to use a regular 56k modem to make calls from this gateway, or do you need a card like the LineJack card?
Question 2: Will gateway software such, as Open H323 PSTNgw or Vocal, be the software to use to translate from this modem to the network inteface?