IP. Most use SMPP (http://en.wikipedia.org/wiki/Short_message_peer-to-peer_protocol). Additionally, many operators require some kind of VPN to encrypt the communication channel. In the US, if you aren't going to be sending millions of messages, go to an aggregator instead of directly to the operators. They provide additional interfaces (some of which are already supported by kannel) and deal with operator compliance issues for you.
On Sun, Jul 20, 2008 at 3:22 PM, Steven Garner <[EMAIL PROTECTED]> wrote: > I am wanting to add WAP and SMS services to our base of operations > which currently include Asterisk for open-source telephony. Here's > what I don't get from the initial documentation I have read about > Kannel: - where Asterisk requires some kind of physical telephony > interface to connect to the Plain Old Telephone System (POTS), how > does one connect to the WAP and SMS of the major global cell phone > providers using Kannel- do they use IP, or do you need a physical > telephony interface of some kind? Is there documentation or a site > that covers this topic already? > >
