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Old 04-23-2013, 11:58 PM
vkambo vkambo is offline
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Join Date: Aug 2011
Posts: 1
vkambo has 10 reputation points

Two things can cause such issues-:
1. There is some problem in SIP signalling which you need to check by capturing sniffers.
2. If you have any firewall inbetween you need to check that all required ports are open.
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