Conference & Discussion

Product(s) affected: DCN-NG systems with master & slave CCU set-up Version(s): all Problem description: A DCN-NG system will be installed in a building which uses different VLANs for different floors in the building. They want to be able to have interpreters on one floor (in one VLAN) and the rest of the system on another floor (in another VLAN). To this end they have connected their Master CCU to another VLAN than their Slave CCU. This set-up does not work. Question is; should this work and if not, why not? Solution: This cannot work in a DCN-NG system because of the way the system is designed. The communication between the CCU’s, at start-up of the system, uses broadcast messages which are not routed by network devices. These messages have a time-to-live (TTL) of 1, which means that once they attempt to cross into another (V)LAN, the messages are not propagated by the routing (L3) switch. The reason is that the TTL of the packet is decreased every time it traverses from one network to another. When the TTL’s value reaches 0, the packet is dropped by the routing device. Therefore, the broadcast packet will never reach the other CCU, resulting in error messages like “No Master CCU” on the Slave CCU. Therefore the system should be installed on the same (V)LAN. This usually does not pose any technical problems as (V)LANs can be distributed over multiple network devices without issue, it’s just that the predictability of where a device is physically located is less in this instance.

In order to integrate 3 rd party software with the DCN-NG system, there are 3 different integration options: Open Interface (OI) Application Programming Interface (API) Streaming Meeting Data (SMD)

The request was to integrate an AMX NX-2200 with the CCU2. The appropriate licenses were installed, but the devices cannot communicate through the serial connection.

Audio is disrupted in a multi-CCU system, most likely after first install, re-install or reset of a multi-CCU system.

System setup with multiple cameras and a supported multiviewer: Orange: Ethernet connections, red: audio or video connections, blue: HD-SDI Follow the manuals for the multi-viewers. They can be found at their manufacturer’s websites: TvOne Corio Matrix Mini User Manual Kramer MV 6 User Manual Make sure that to get this setup to work, both the multi-viewer and the CCS1000D Control Unit should be in the same VLAN/subnet. Also, use the correct port to connect to the multiviewer: TvOne Corio Matrix Mini; port 10001, example: http://192.168.1.2:100001 Kramer MV 6; port 5000, example: http://192.168.1.2:5000

When upgrading from a previous DICENTIS version that supports DANTE (V2.20 – V3.00) to the latest version 3.10, the following problem will occur; The DICENTIS system is not visible anymore in the Audinate’s DANTE controller software, where it was visible before the upgrade.

Question Can a CCU be used in the same DCN-NG system as a CCU2 or CCUB2? Answer No, this is not possible. Mixing CCUs and CCU2/CCUB2s in a DCN-NG system is not supported. It’s also not possible to use a CCU as a spare unit in case of failure of a CCU2/CCUB2 in a DCN-NG system.

In order to add authorizations to an existing license, the current license key is required as well as the new authorization numbers. How to find this key is detailed in another article: How to find the license key loaded in a DCN-CCU2 Follow the next steps for adding the new authorizations: Go to https://license.boschsecurity.com Fill in the CCU's Serial Number and CHK: Enter the current license key (this is found on the license key document received after activating the previous authorization numbers). In the following windows the license information is shown and it's possible to add additional authorization numbers. If multiple authorization numbers need to be added, choose "Next Authorization" If all authorization numbers are added, choose "Finish register" Next window will give the opportunity to register a spare CCU if applicable. A last verification is done in the next window, if things need to be changed, the process goes back to step 4. The license key with all information is shown on the next page. Note that the Print button doesn't work in all browsers, for this refer to "Printing the License Key document to PDF" Upload the license key into your CCU or NCO. The Bosch ‘download and license tool’ is to be used to upload your license into a CCU2.

Especially when using large databases it is advisable to make a backup occasionally in case something goes wrong. The manual describes ways to backup, restore and update the database quickly. This document describes how to use these options and when and also an alternative way for older versions.