In an OCS VOIP deployment, call routing works fine. But it breaks down when the caller ID is blocked in certain circumstances. I was working with one of the customers, everything was working just fine when caller ID was not blocked at the gateway end.
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Recently I worked on an issue where internal users could dial into conferencing atendant, but PSTN users cant. Dial-In conferencing was configured properly. When a PSTN user tries to join the conference, OCS does provide option to dial the conference
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