Archive for March, 2011

Telephone signalling delays

March 17th, 2011 No comments

Phone KeysBack at the end of the 1980s, our telephone exchange switched to digital, in our case from Strowger to System Y. I can remember being impressed at the time with a number of things; one was how there was no longer a gap between ‘dialling’ the last digit and the ringing tone. The connection was instant. Fast forward 20 years and we now have a pause again while the connection goes through; what happened? We seem to have gone backwards. I’m not talking about the delay when calling mobiles and the network has to locate a phone, I’m talking landline to landline.

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