For real time, reliable two way messaging you'll either want to peer with the carriers you support (using SMPP) or use an aggregator. There are a lot of aggregator options and you'll want to shop around to get the best price.
Using SMPP I've seen round trip times as low as 10 seconds.
If you want media (pictures or video), you'll want an MM7 connection.
I'd link to wikipedia but I'm on a mobile phone, sorry.
Comments
For real time, reliable two way messaging you'll either want to peer with the carriers you support (using SMPP) or use an aggregator. There are a lot of aggregator options and you'll want to shop around to get the best price.
Using SMPP I've seen round trip times as low as 10 seconds.
If you want media (pictures or video), you'll want an MM7 connection.
I'd link to wikipedia but I'm on a mobile phone, sorry.