3 ms·
They are essentially free, because the carriers provide no delivery guarantees for SMS messages. That is, if the channel is busy with other signalling traffic,
by a-priori 17y ago
They are essentially free, because the carriers provide no delivery guarantees for SMS messages. That is, if the channel is busy with other signalling traffic, then SMS messages will be silently dropped.
- dkersten 17y agoThe TCAP transaction would be retried approx. ten minutes later, up to three times (on the networks I've seen, anyway).