Problems when using SJphone with Cisco 1750

Here is onother one way question.

I am trying to deploy Cisco 1750 with two FXO VIC cards, and I ran into a strange problem. When I dial using SJphone and g711u, I can hear sound coming from PSTN, but the other side gets nothing. When I tried with X-lite, everything works fine.

Since this is a test, I excluded all that can be a problem. There is no NAT (everything is in one network).

Best regards Srdjan

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