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Company Intranet cannot use telephone connection

Time:09-23

For big action! New bought a dozen telephone, when connected to the network in the company can't use, but outside the connection cable when it can be used, how to solve!!!!!

CodePudding user response:

This must be a protocol is gateway filtering, and some old gateway does not support voip protocol, such as h. 323, h. 264, see that you using the Internet phone,
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