<div>Hi, everyone,</div>
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<div>I have met a very strange problem. We use a Asterisk PBX connected with two rollover PSTN phone line provided by Verizon by Digium TDM cards. The incoming calls are always OK. But when I make outgoing calls, sometimes it works, sometimes it just get a busy tone, doesn't work at all. The strange thing is that when I use the same server with SBC lines perviously, it worked fine.
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<div>What is the problem here? This drives me crazy.</div>
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<div>Thanks</div>
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<div>/frank</div>