Recently I switched service providers for my POTS line. We used to be using a WECo 5ESS, with the older line cards (the better sounding ones!). I switched to a cable provider and obtained a landline through them. It's not VOiP. It is routed through the same switch I used to use but it's not homed from that switch. So obviously this makes finding the CLLI of the switch alot harder.
To get to the point, while messing around with the switchhook I got a strange busy signal. It's 1600 Hz on for 0.5 seconds, off for 0.5 seconds. Here's a wav file of it:
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If you have any idea of what kind of switch this is, please advise! Thanks.