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
Melrose Labs: We deliver innovative services in cloud communications across mobile, fixed-line, satellite and internet. Through these services, we enable businesses to communicate better with their staff and customers, and by doing so, increase their success.