Follow Slashdot blog updates by subscribing to our blog RSS feed


Forgot your password?

Comment: Re:POTS security is broken. (Score 1) 193 193

Back in the day a call starts on a originating trunk/port and ends on a terminating trunk/port on a telecom switch. That term trunk can be a local trunk or a route to another switch. Today, I suppose, that inbound trunk could be the internet and the outbound trunk could be the internet as well. Also, the outbound trunk may be a long distance switch which may or may not be owned by the same carrier.

Each switch has a record of where the call came from and its disposition true for sure, matching one switch's records to another's is a relatively simple. If all of the switches are owned by the same company it is possible to match all the call records from multiple switches and have a complete record of the call. I know it's doable because I've done it. If not all switches are owned by the same carrier, it is probably very challenging, (unless something has changed over the years to increase record sharing or something which I belive carriers were loath to do), since you have to get records from all the carriers for the call. Now throw the internet-originated calls into the mix and it's going to be very challenging unless you are somehow listening to everything or have access to everyone's database.

Correct me if I am wrong as it has been quite a few years since I did this telecom stuff. I was only familiar with SS7 and ISDN; it's probably SS10 and ISDN++# today.

Comment: Re:Hilarious! (Score 1) 220 220

A good leader leads to a good place. A bad leader to a bad place. Often a very good leader will make great personal sacrifices. How can a leader that leads to bad place be successful?

In a flock of seagulls or a bike peloton, the leader pulls until he can no longer pull well, then moves back so a fresh leader can arise, that way the group, including the leader, gets to the destination. In these cases the pack chooses the destination.

Leadership is not about power. Leadership is about getting there. A good leader takes you where you want to go.

Comment: Yes and No (Score 1) 309 309

Back in the olde days of IBM PCs and telephones, when Interactive Voice Recognition was in its wee infancy, I had to train our Scott Intruments voice recognizers to hear the difference between 'yes', 'no', and 'garbage'. We recorded all the utterances and when it was time to train, a human, namely me, would listen to them and tell the software what it was supposed to have heard. It was occaisonally amusing what people would say in a two second recording in response to the question: "Press 1 or say yes to accept this collect call."

BLISS is ignorance.