Alphanumeric Sender ID
The alphanumeric sender ID allows the sender to send messages using a custom, recognisable sender ID constructed from any combination of numeric and alpha characters (0-9, a-z, A-Z, _). An alphanumeric sender ID is much more recognisable by users so they can identify the sender more easily. This way, the sender ID can be used to present anything from a company name to a name of a government organisation. However, the receiver of the message can't reply to a message sent with an alphanumeric sender ID.
See Melrose Labs Tyr SMS Gateway
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