I think the sudden upsurge in the Cable TV and Telco industry in the mid-late 90's meant a huge demand for service and network technicians, this resulted in people having career changes into this industry.
I am not knocking anyone who is able to take a career change because it's a difficult thing to do, but they were not helped by the poor long term training of their employers. Take ntl for example and their attitude of a few quick training courses and you are fully experienced! We all know that doesn't work on it's own and will only work if the individual is interested and wants to use the training as a base to further his/her knowledge.
I learn new things every day of the week, unfortunately it's easy to get into a rut (been there myself) and when time comes for a career change you find that the skills you have gained over the past x amount of years are not in demand by any other company.
It then becomes time for a career change, I had a few problems because my technical knowledge is far exceeding my formal qualifications and many companies want people with degrees and throw CV's like mine in the bin!
I looked at the market and decided that I had to concentrate my CV on the RF component level skills that I had not used for a 5 years of so, I then told a little white lie by saying that I had been working on the bench to component level quite recently. I was fortunate to be able to jump straight back into that role because of my hobby being Amateur Radio and constructing equipment.
I git a foot in the door and have ended up with a good position in a company with some very experienced professional people unlike many in another that I worked for.
I hope everything works out for you and I hope you are not affected by any redundancies in your area, but I would suggest looking at your skills and see what openings are about as an insurance policy. We are having difficulty now in filling three positions at my place of work, and you wouldn't believe how difficult it is to recruit dependable people with the right skills that will fit in.