<div>Oh what a night! Ok so I have another strange problem I am facing. I have a 3745 MGCP gateway with inbound only PRI. Every now and then when I place a call to one of the main numbers on that PRI I get dead air.</div>
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<div>I see the call hit the gateway via q931 debug, I see it hit a second gateway that is tied to an old pbx that handles this particular set of users for this number.</div>
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<div>Things show them as connected but I don't here the greeting or anything, its just dead air.</div>
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<div>After troubleshooting for a while and being able to replicate the dead air every now and then, the one thing I notice the calls have in common when I hit the dead air is this DSP/Ch 1/10:1</div>
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<div>Other calls which hit DSP/Ch 's such as 1/9:2 and 1/9:4 and so on work.</div>
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<div>It seems to be related to the "/10:" portion of the DSP/Ch. </div>
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<div>I have run the "test dsp" command on 0, 1, 2, 3 and 4 selecting the option 1 "query dsp resource and status". Results only came back for 1 and 3 and all the results said dsp x is alive.</div>
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<div>Not sure what else to do at this point so any suggestions would be appreciated.</div>
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