Chapter 1: First steps, baby steps
5 The Telco “startup”
The technology
In 1997, I stepped into the world of telecommunications, where one of the key (and first) players was the AT&T Definity switch, later known as Lucent Technologies’ Definity switch, after a company’s spinoff for their enterprise communications products. This switch was a powerhouse in the realm of telephony, designed to handle both analog and digital telephony and to interface with various adjuncts, including servers equipped with specialized software for reporting, business intelligence (BI), messaging, and Interactive Voice Response (IVR).
The Definity switch was the heart of many corporate phone systems in its heyday. It was a Private Branch Exchange (PBX) system that allowed organizations to manage their phone lines, extensions, and calls internally. What made the Definity switch so versatile was its ability to handle both analog and digital telephony.
Analog telephony, characterized by the use of electrical signals to transmit voice and data, was still common in 1997. Many telephones and fax machines used analog connections, and the Definity switch had the capability to interface with these analog devices seamlessly. It could route analog calls, manage voice mailboxes, and even handle the transfer of faxes between users (only through its external messaging system).
On the other hand, digital telephony, which involved encoding voice and data into binary code for transmission, was emerging as the future of telephony. The Definity switch excelled in this domain as well. It could manage Digital Signal Processor (DSP) resources for tasks like voice compression and encryption. The switch could interface with digital telephones and provide features like call waiting, call forwarding, and three-way calling, as long as 6 party conference calls and at some point, a whole deal of call center logic and queuing directly within the switch. VoIP and IP telephony were still far in sight…
The true power of the Definity switch lay in its ability to interface with adjuncts, specialized servers that hosted software applications designed to enhance the telephony experience. These adjuncts were connected to the switch via serial connectivity, allowing for real-time data transfer and communication.
- Reporting and Business Intelligence (BI) Servers: These adjuncts were essential for organizations seeking to analyze their call data. They collected and processed information related to call volumes, call durations, and other call statistics. The specialized software running on these servers could generate detailed reports, enabling businesses to make informed decisions regarding their telephony systems. With access to these reports, organizations could optimize their call center operations, improve customer service, and identify areas for cost reduction. The CMS (Call Management System) was my pride and joy, as it was hosted on a Sun Solaris platform where we would provide the hardware and the software (preinstalled) to our premium customers.
- Messaging Servers: Messaging was a crucial aspect of telephony in the late ’90s. Organizations relied on messaging servers to handle voicemails and fax messages. The Definity switch interfaced with these servers, routing voicemails and faxes to the appropriate user’s mailbox. Users could access their messages through their telephones or, in some cases, through computer-based applications. Messaging servers streamlined communication within businesses, allowing for quick and efficient message retrieval. Here we were talking about a SCOUnix server, with our proprietary software named Audix that would handle all the real-time requests coming to and from the PBX. The server also hosted the users mailboxes, with their voice and fax messages that could then be backed up on tape.
- Interactive Voice Response (IVR) Servers: IVR servers were at the forefront of customer service and call center automation. The Definity switch integrated with these servers to provide automated responses and gather information from callers. The specialized software on these servers, named Conversant, enabled businesses to create interactive menus, handle customer inquiries, and route calls to the appropriate agents. This technology significantly improved call center efficiency and customer satisfaction and was obviously hosted on SCOUnix OS.
The serial connections between the Definity switch and these adjuncts were crucial for data exchange. They allowed the switch to communicate with the servers, providing information about call routing, call statuses, and user preferences, along with voice messages and additional data transmitted. This integration was the backbone of efficient telephony operations and was instrumental in creating a seamless and productive communication environment within organizations.
The AT&T-then Lucent Technologies Definity switch, with its capability to handle analog and digital telephony, and its ability to interface with specialized adjuncts via serial connections, played a vital role in shaping the telecommunications landscape of its time. It empowered companies to manage their phone systems effectively, providing the foundation for more advanced telephony solutions that have since evolved with the ever-changing technology landscape.
We started talking about VoIP and IP communications only around the years 2000-2001, where this new technology would disrupt the voice lords in more than one way… but back then, this was still almost sci-fi.
You start working in 1997 on an old at&t, now lucent technologies, Definity switch. describe how the switch works with analog and digital telephony and how it interfaces via serial connection to special adjuncts, servers that have a specialized software (either for reporting and bi, or for messaging, or for IVR). |