The text discusses the varied approaches of major telecom carriers Verizon, AT&T, and T-Mobile in handling the launch of 10DLC (10-digit long code) messaging systems. Verizon, being the pioneer, has streamlined the registration process with a consistent surcharge for both SMS and MMS, while AT&T and T-Mobile employ The Campaign Registry (TCR) with distinct methodologies. AT&T imposes message-per-second limits based on a campaign class determined by proprietary data, where accuracy in registration details can influence class assignment. Conversely, T-Mobile evaluates message limits at the Brand level, assigning daily limits based on a Brand's registration score, with an option for a review process if limits are unsatisfactory. Despite these operational differences, AT&T and T-Mobile share a common registration process, and the text encourages reaching out to The Campaign Registry for detailed queries or consulting Bandwidth representatives for further information.