And we’re always going on about digitalization! In the real world of digitalization, my current call would be merely a service and it would be completely independent of the end device being used. This would give me the option to simply transfer my call from the landline to, say, my cellphone and vice versa without the person on the other end noticing. I would be able to stay on the phone without needing to hang up and still be free to quickly dash to the car and make it to my next meeting on time.
Notice all the “woulds” in there? Well, they should really be “wills”. Admittedly, conventional telecommunications systems are still miles away from fulfilling this dream. State-of-the-art unified collaboration systems can achieve it, albeit with a complex solution using a soft client or app on the relevant smart devices – and only if those have actually been installed and are being used. All the same, in today’s All-IP world, flitting between different devices is no longer an impossibility. This is down to the IP multimedia subsystem, known as the IMS layer for short, which uses IP as the communication standard and SIP (session initiation protocol) as the protocol. Until now, IMS has been predominantly used for mobile communication to connect “conventional” mobile networks such as GSM or UMTS with IP-based networks. However, it also ensures providers can easily integrate those illustrious add-on services. For example, these can help you check whether it’s worthwhile picking up the phone in the first place by telling you whether the person you’re trying to reach is able to take your call (as long as they’re using the same add-on).