A text messaging service component of most telephone, Internet and mobile device systems, Short Message Service (SMS) uses standardized communication protocols that let mobile phones exchange short text messages. Developed as part of the GSM standards and based on the SS7 signalling protocol, SMS rolled out on digital cellular networks starting in 1993 and was originally intended for customers to receive alerts from their carrier/operator. It allows users to send and receive text messages of up to 160 characters, originally to and from GSM phones and later also CDMA and Digital AMPS; it has since been defined and supported on newer networks, including present-day 5G ones. Using SMS gateways, messages can be transmitted over the Internet through an SMSC, allowing communication to computers, fixed landlines, and satellite.
Technical Constraints and Capabilities
SMS is restricted to 160 7-bit characters, which equates to 1120 bits or 140 bytes. This limitation is rooted in the protocol's structure, built to integrate with existing mobile network systems seamlessly. When a message exceeds 160 characters, it can be broken down and sent in segments. These segments, up to a maximum of six, allow for a linked message that totals 918 characters. The messaging system automatically handles this segmentation, ensuring that longer messages are delivered in a coherent sequence to the recipient.
Marketing Applications
In sales and marketing, understanding the technical constraints and capabilities of SMS is crucial. It's a powerful tool for direct customer communication, often used for promotions, reminders, or customer service. The 160-character limit encourages concise, impactful messaging, which is key in crafting effective marketing communications. Moreover, the ability to send linked messages allows for more detailed communication when necessary without losing the benefits of direct and immediate reach characteristic of SMS.
Evolution of Mobile Messaging
The evolution of mobile messaging includes MMS (Multimedia Messaging Service), which allows the sending of multimedia content like images, audio, and video. MMS expands the capabilities of traditional text messaging, offering more dynamic and engaging content options for marketing and communication strategies.
