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USAVolleyball
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Comcast PRI + Dialogic Gateway, no ringthrough

We moved our corporate HQ to a new location that is being serviced by a Comcast PRI line (split off from our Fiber connection)

When we set the system up, everything worked fine, and still does for the most part, however calls INTO the system receive no ringing sound when calling a party within our organization.  

If you were to call my extension directly, the phone rings once on the earpiece, and then there's dead air until either A) I answer, or B) my voicemail picks up.  

Calls out have zero issues.  This issue is only present for people calling INTO the company.  

Comcast, Dialogic, and our IT vendor are all shrugging - no one has anything I can check or any settings that need to be changed.  

Sequence of the PRI:

Comcast - > PRI -> Comcast Equipment -> Handoff to our Dialogic -> Dialogic to OCS Cluster

I can't find any settings in the OCS setup that would fix this particular issue, and since no one was paying much attention until the problem was reported, we don't know if the ringing ever worked at the new building, or if it is a recent issue.
IP TelephonyVoice Over IPMiscellaneous

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USAVolleyball

8/22/2022 - Mon
jgerbasi

I doubt it is the PRI since calls can actually be answered. It would most likely be a setting in the station set up for Audible Rings it might only be set to 1 instead of lets say 4.
USAVolleyball

ASKER
Problem is, where would such a setting be at?  I haven't had any luck in my searches for such a setting.  Nothing has changed on our setup since we moved locations (in terms of our actual OCS setup)
jgerbasi

Go into the Station or Extension setup of any extension. There should be a setting for rings there.
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USAVolleyball

ASKER
This is a global problem - isn't there a way to fix this for everyone instead of each user?  I need to make this change across every connection, but I don't see how to do that from any system.
USAVolleyball

ASKER
Please do keep in mind I'm referring to the ring being played for the person who is CALLING us, and not merely the rings that we hear on the phones on our desks.
jgerbasi

Try this hopefully it applies to the version you have...
When the DMG4000 sends the SIP call to OCS and gets a ring back it sends an ISDN 'Alert' message to the 5ESS switch. The switch should then send a ring to the person calling you.

If the switch isn't sending the ring then you could ask the switch operator to look at changing the configuration if possible.

If this isn't possible you can change the DMG configruatio so that it generates the ring tone.

The possible downside is that the ringtone generated is not necessarily localised so may sound a little odd but generally it is recognisable as a ring tone.



So, open the diva Server configuration manager, select View/Extended.

Click on the PRI line 'plug' and in the right hand panel change 'Generate ring tones' to Yes.

Do File/activate, reboot if requested and test away.
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USAVolleyball

ASKER
sorry, diva server configuration manager?
jgerbasi

It should just be in the Server Config Manager. forget the Diva part.
USAVolleyball

ASKER
Which server are you recommending this change be made from?  I don't see any menus / configurations that you are mentioning here.  

This is OCS 2007 R2, if it helps.
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jgerbasi

In OCS can you go to the VoIP Host Group Settings? Does the value have just an IP or an IP:PORT?
USAVolleyball

ASKER
No idea where that menu is - I was literally thrown into this position, I have no prior experience with OCS, I can access the management interface on each of the OCS members through compmgmt.msc but that's about it.  

This is the only interface I've ever been able to find for the OCS system, see attached.  

It also might help to know which server I should be looking at.  Mediation, AV/Edge, OCS Main, etc.
jgerbasi

It should be on the Dialogic server under Configuration -> Routing Table -> VoIP Host Groups
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USAVolleyball

ASKER
We're using a DMG2030.  I've never seen VoIP Host groups in the device UI itself.
USAVolleyball

ASKER
Sorry, I was looking for a submenu - I've got the correct page now.
USAVolleyball

ASKER
Here's what our configuration looks like in the VoIP Host Groups menu.
VoIP.JPG
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USAVolleyball

ASKER
The IP it is referencing is an IP on the Mediation server, the port is correct as well.
jgerbasi

Im sorry at this point I would recommend calling Dialogic for support. I am sure they have dealt with this in the past and may be able to further assist.
USAVolleyball

ASKER
Yeah, they've tried.  Thus this post.
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jgerbasi

Last resort Idea have you tried rebooting all devices? Dialogic server and handoff?

Sometimes simple things work as we all know.
USAVolleyball

ASKER
Indeed.  It was one of the first things we tried.  :)
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USAVolleyball

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Resolved issue on our own in December, 2012.
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