Our agreement with our SMS gateway provider allows us to text-enable most landlines using our SPID (Service Profile Identifier). This process involves letting NetNumber, who routes all long-code (10-digit number) SMS messages through the various cell carriers, know that the owner of the number has given us permission to act as their Service Provider’s limited agent for the sole purpose of SMS message origination and delivery. This permission is provided to us in the form of an LOA from the owner, or the service provider, of that 10-digit number.
The provisioning process to activate the number does not in any way affect the voice communication, IVR, plan, carrier or any aspect of the voice service. The SMS capability works “over the top” of the voice platform. This capability has actually existed for a number of years (think Google Voice) but is just now coming to the forefront of B2C communication.