Quote:
Originally Posted by voip2007
Why sometimes the call can go through, but sometimes it doesn't work, just busy signal.,Even I dial the same number. Anybody knows?
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The network is overloaded, somewhere between you and the POTS gateway, also, if you "peer" one network to an other, one of them is overloaded, or, the SIP (protocol) message did not came 100% through, so best chance you make, when you minimal peer, aka weakest-link...