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7936 Conference phone doesn't give ringback tone to pstn calls UCM5.1.2000

When we place a call for any on-net 4 digit calls we get the ringback tone that its calling we hear it connect and the called party hears us and we hear them.

We used our cell phones to test the client issue.

When we call out the pri to pstn called cellphone we dial the 10 digit off-net call but never hear any ringback tone nor when we pick up the our ringing cell phone do we hear anyone on the calling end nor anyone on the 7936 hear anyone on the called end

We are running UCM 5.1.2000 and other phones on the system are able to conference off-net callers on thier phones. This is a very weird issue.

We have 100 phones working at this site with no issues just that the 7936 does not work as it has worked at so may other UCM installs we have performed.


Re: 7936 Conference phone doesn't give ringback tone to pstn cal

When DTMF digits are pressed from 7936, tones for consecutive same digits are not played. However, correct DTMF digits are sent to the other device which is mainly Voice Mail/IVR.

Try this BUG: CSCsd97794