Done_Posting
Shoot to kill
Premium
join:2003-08-22
Toledo, OH | reply to marigolds
Re: Cost is already paid?
SMS uses the SS7 protocol (for anyone who cares). As far as not being able to triangulate it, I'm not so sure about that, but I'll defer to the experts.
- Tate
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marigolds
Gainfully employed, finally
Premium,MVM
join:2002-05-13
Saint Louis, MO
| reply to wtansill
Unfortunately I don't have the technical background for it.
Basically though, the SMS provider is separate from the cellular provider and the SMS message is sent over a different protocol (that's why there is no way to geolocate an SMS message, but you can geolocate a cell phone call). The gateway network for SMS is a different network from that for PLMN. |
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wtansill
Ncc1701
join:2000-10-10
Falls Church, VA
| reply to marigolds
said by marigolds  :There actually is a very significant bandwidth problem for SMS. That is why they have the 160 character limit. FEMA and DHS have been dealing with this technical limitation for the text alert system they have been working on. Could you elaborate on this please? |
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marigolds
Gainfully employed, finally
Premium,MVM
join:2002-05-13
Saint Louis, MO
| reply to axus
said by axus :The problem is that wireless companies don't seem to be in a state of competition on text messaging. When companies collaborate together to raise prices on a commodity, it's called collusion. OPEC would be illegal if they had a presence here. The only way this would make sense and still be legal is if there was a technical reason limiting the number of text messages that could be handled by the companies. There actually is a very significant bandwidth problem for SMS. That is why they have the 160 character limit. FEMA and DHS have been dealing with this technical limitation for the text alert system they have been working on.
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