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DMG2000 port usage

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DMG2000 port usage

  • Hi,

    we implementing a DMG2120dtisq. We are planning to use 3 ports for E1 connections for inbound and outbound telephony to the PSTN and parallel 1 Port for QSIG connection to a Siemens HiPath 3800 PBX.

    Is this a supported scenario?

    BR

    Thomas Bormuth

  • The DMG2000 series must have the same protocol on all ports so you cannot select EuroISDN for the three PSTN facing ports and QSIG for the port to the PBX.

    You will need to use EuroISDN to the PBX and reconfigure your HiPath.

    The DMG4000 series does support mixed protocols btw so if this is a scenario you will be using in another deployment you could use a DMG4120.  

  • Hi Vic,

    thanks for the quick response. Connecting the PBX would work? The PBX today is already connected via E1 to the PSTN. The reconfiguring could be pretty easy?

    BR

    Thomas

  • ISDN PRI Crossover.jpg

    If the PBX is already connected to the PSTN then it will be using EuroISDN or similar so yes, it will be straightforward to configure the E1 line from PBX to the DMG2120 to use EuroISDN. 

    You may need a E1 crossover cable, pinout attached and you may need to configure the DMG to be the Network side of the connection.

  • Hi Vic,

    we managed to connect the PBX and the gateway the way you described. We had to change the pins as you described and we had to switch to network side for the connection Thank you very much. There are only two small problems left.

    1. The extension number is not completely transferred, only the first digit. So it looks like country code (+49), 4 digits area code, 4 digits PMX number and the first digit of the extension.

    2. Only block dialing is possible. It's not possible to dial the number digit by digit.

    Any idea?

    BR

    Thomas

  • Configuring the DMG2000 for receiving Overlap Dialling V1.3.pdf

    Good to hear its working.

    1) I'll need to see a trace to understand why the number is being truncated. Its possibly related to question 2 below but the trace will show. In the Diagnostics tab there are three logging options, the top option (Trace) is the one we need, so please press the configure button alongside Trace and set teldrv to all boxes ticked, and Tel, VoIP, call log and route to all boxes ticked except the left most box, code.

    Then save that logging configuration, start the trace, clear the trace and make a test call. After the call has been made stop the trace as soon as possible then download the trace and attach it to this post, use the Options tab in the post to attach a trace.

    2) The DMG supports overlap dialing. The attached PDF shows how to do a basic configuration and how to use additional parameters to fine-tune the operation.

     

  • Hi Vic,

    again thank you for your help. Everything is working now. The problem with the extension was solved by setting TDM Passthrough to No. Also the documentation for reseiving overlap dialing has helped a lot and it is working now.

    BR

    Thomas

  • Hi Thomas, thanks for the update, good to hear its all working well now.

  • Hi Vic,

    unfortunately one more small problem appeared. We added a MS Lync 2010 Server via IP to the gateway. The Lync users with a dedicated extension transfer it the right way. Same with the PBX users. If no extension is configured the Lync Server transfers a standard extension to the gateway. In the gateway log we can see the configured calling number. The log also shows the same calling number for the outgoing call. But the callee gets the wrong number displayed. Even when we enter a fixed number in the CPID Manipulation it is not transferred. It is shown in the log the right way but still the callee gets the wrong number displayed.

    BR

    Thomas

  • If the calling number is being sent correctly from the DMG then the issue must lie with Lync. I seem to remember a bug report with Lync under certain call transfer circumstances when the calling number was sent incorrectly and think it was resolved with a Mediation server update but can't immediately find the details I'm afraid.

    If you search you may find the answer or speak to your Microsoft support or just upgrade Lync to the latest release which should resolve the issue because I think it was fixed in Mediation server CU 4.

     

  • http://support.microsoft.com/kb/2500421

  • Well spotted, thanks:-)

  • Thanks to all for your help. But the reason for the behaviour was pretty simple. The provider used the shown number for identifying the E1. The number we created with the CPID manipulation was configured for another line. So usage at this line was not allowed and changed on the provider side to the standard number. Nothing to do with the DMG which is really working very well.