Did exactly the same.... We had sporters hanging off the wall for a while (couldn't pack them tightly due to the crappy ventilation on the Sporters, but they were light, so clamping the cables to a suitable plate and fitting it to the wall worked great....)
The local telco had problems supplying enough lines from the nearest exchange, so they ended up hanging a thick cable bundle in the trees for several hundred meters, make a hole in one of our windows and put a large multiplexer cabinet in our office... Then three months later we moved to different offices - they were not pleased.
