If you're going through a CLEC for your lines, they can probably set the Glare Preference to be You or the Telco. I'm not sure if the Baby Bells would add that preference option for you.


-m

On Tue, 3 May 2005, Eric Wieling aka ManxPower wrote:

Ryan Courtnage wrote:
Hello all,

Everyone has probably experienced this at some point in the past:
You pick up your analog phone. Rather than hearing dialtone, you are connected with someone who has just called you. Neither you nor them heard a ring.


Maybe it's just me, but it seems these "freak incidents" would occur more frequently years ago, than now.

I've now experienced this a couple of times with an * system (TDM400p - quad FXO):
A SIP exten dials digits which are answered by a Zap trunk. As soon as Zap answers, the SIP extension is connected with an inbound (PSTN) caller (who was expecting to hear an IVR).


My questions are: Who's to blame (telco, tdm card, * config, gremlins)? Is this avoidable?

It's called "glare".

http://home.intekom.com/scotland/cookbook/146.htm
http://www.authorizedcom.com/lines_trunks.asp
http://www.beagle-ears.com/lars/engineer/telecom/bizphone.htm
http://www.zvon.org/tmRFC/RFC3064/Output/chapter4.html
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