For more information on the configuration of Praesideo, CobraNet and PC CST check the Praesideo IUI.

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1 APPLICATION NOTE & CobraNet and PC Call Station Introduction This application note (AN) describes an example of the PC Call Station (PC CST) in combination with and CobraNet. General In this example we have a PC CST and 3 systems connected via Cobranet. The 3 systems are connected via an Ethernet switch. Audio and control data are both on the same network. Basic knowledge of the configuration and system set-up is necessary to be able to configure the system. The CobraNet, PC CST and some settings are explained in this AN. For more information on the configuration of, CobraNet and PC CST check the IUI. PC Call Station The PC CST is a sw package provided by Bosch Security Systems and is free of charge. The PC CST can route calls and Back Ground Music (BGM) to loudspeaker zones in a system but also to remote systems, connected via analog audio lines or CobraNet. A TCP/IP connection between the main system and the remote systems is always required. The PC CST can also handle chimes, alarm signals, messages priorities etc. Keep in mind that the PC CST sw package is a demo version with limited functionality. It is not possible to add icons, bitmaps, pictures, logo s etc. There is a limitation in, the number of systems, the number of zones and the number of messages it can handle. However, the PC CST program is written in Visual Basic and the source code is free available, so a software engineer can modify and expand the PC CST, if required AN CobraNet & PC CST 1-20

2 CobraNet Developed by Peak Audio, CobraNet is the industry's leading technology for distributing uncompressed real-time digital audio over a Fast Ethernet network. CobraNet basics CobraNet spec s 48 KHz or 16, 20, 24 bits Audio routed in bundles. Up to 8 audio channels per bundle Up to 4 transmitter bundles per CobraNet unit Up to 4 receiver bundles per CobraNet unit 32 channels full duplex capacity per CobraNet interface Low latency, 5-1/3, 2-2/3 and 1-1/3ms spec s 16 bits 4 audio inputs per CobraNet interface (Node) 4 audio outputs per CobraNet interface (Node) and CobraNet In the CobraNet interface, 4 input- and 4 output channels are available. These 4 input and 4 output channels are fixed routed to CobraNet channels 1 to 4. With the CNConfig configuration program these 4 CobraNet channels can be routed to channels in the available CobraNet bundles. Routing diagram audio channels CobraNet interface AN CobraNet & PC CST 2-20

3 Network setup for CobraNet The network switch used for the test is the 3COM 2C16792, Office Connect Dual Speed 16Plus, switch 3COM 2C16792, Office Connect Dual Speed 16Plus, switch CobraNet basic system setup Overall test set-up Test set-up PC CST and CobraNet AN CobraNet & PC CST 3-20

4 system setup set-up System 1 System 2 System 3 PC CST Network controller Network controller Network controller Call station Call station, 2 ext. Call station, 2 ext. 4 Channel amplifier 4 Channel amplifier 4 Channel amplifier CobraNet interface CobraNet interface CobraNet interface Music source Zones: z1-1 z1-2 z1-3 z2-1 z2-2 z2-3 z3-1 z3-2 z3-3 z4-1 z4-2 z4-3 CallOut BGMOut BGM channels: BGM configuration PC CST routing General The PC CST A PC CST requires 2 audio channels from the main system to the remote systems. The 1 st channel is used for BGM, the 2 nd channel for calls. (If more BGM channels are requires more audio channels are needed) In CobraNet this means that 2 channels have to be routed from the main system to the remote systems. These 2 channels can be in the same multicast bundle. Using a multicast bundle, multiple, remote, systems can be connected AN CobraNet & PC CST 4-20

5 Multicast bundles can have multiple receivers assigned to 1 transmitter. Basically there is no limit to the number of remote systems, the receivers. In this example calls and BGM are send from the main system 1 to the remote systems 2 and 3. Routing diagram for CobraNet PC CST routing in CobraNet AN CobraNet & PC CST 5-20

6 system1: the transmitter Call Station configuration The Call Station (CST) only requires the basic settings. Most of the settings are in the PC CST. Priority, chimes, alarm tones, messages, zone selection etc. are determined by the PC CST. Though the CST is used by the PC CST it can still operate as an stand-alone CST with it s own functionality and without the use of the PC CST Using the PC CST, the Press to Talk key (PTT key) is not used. The PTT key for the PC CST is part of the PC CST screen. System definition: Enable Name : Mark to enable the CST : Enter the name of the CST. This name is also used in the PC CST configuration Call station type : Select type of CST: Basic or Kit. Extensions : If connected, enter the number of extensions (Not used by the PC CST) Serial number : Enter the serial number Equipment configuration: Class Partial Call Sensitivity Supervision : Select Normal or Emergency (Not used by the PC CST) : Select Yes or No (Not used by the PC CST) : Select the required sensitivity : Select On or Off AN CobraNet & PC CST 6-20

7 Action Programming: Priority Call Macro Zone Zone groups : Select priority (Not used by the PC CST) : Select Call Macro (Not used by the PC CST) : Select zone(s) (Not used by the PC CST) : Select zone groups(s) (Not used by the PC CST) Control outputs : Select control outputs (Not used by the PC CST) Loudspeaker zones configuration The loudspeaker zones for the PC CST have to be configured in the system. The names of the zones are used in the configuration of the PC CST. These names appear on the PC CST screen. Zone and Amplifier: Assign amplifier output(s) to the loudspeaker zones AN CobraNet & PC CST 7-20

8 For the connection to CobraNet, 2 zones have to be configured. The zone names will be used in the PC CST configuration as well. CobraNet output CIN1_AO1 bgm is assigned to zone BGMOut. CobraNet output CIN1_AO2 is assigned to zone CallOut. BGM channel Input NCO1 CN_AI1 bgm is the input for BGM and is assigned to BGM channel BGM The name of the BGM channel will appear on the PC CST screen. The name BGM is also used in system 2 and 3 Do not assign loudspeaker zones for default music routing. The setting will be overruled by the PC CST and will not be restored until a restart of the NCO AN CobraNet & PC CST 8-20

9 CobraNet configuration CIN1_AO1 bgm is, internally, connected to AO1 of the CobraNet interface. AO1 is assigned to bundle 200 (=multicast bundle), channel 1 The selected format is 16 bit. CIN1_AO2 is, internally, connected to AO2 of the CobraNet interface. AO2 is assigned to bundle 200 (=multicast bundle), channel 2 The selected format is 16 bit. The result of these settings: BGM, routed on the PC CST in system 1, is now available on bundle number 200, channel 1. PC CST calls from system 1 is now available on bundle number 200, channel 2. Each CobraNet unit connected to the network can receive the BGM and call signals AN CobraNet & PC CST 9-20

10 system 2: the receiver The loudspeaker zones for the PC CST have to be configured in the system. The names of the zones are used in the configuration of the PC CST. These names appear on the PC CST screen. Assign amplifier output(s) to the loudspeaker zones. BGM channel Input CIN2_AI1 bgm is the input for BGM from the main system and is assigned to BGM channel BGM. The name of this BGM channel, BGM, has to be the same as in the main system. Do not assign loudspeaker zones for default music routing. The setting will be overruled by the PC CST and will not be restored until a restart of the NCO. CobraNet configuration From bundle 200, channel 1, the BGM signal from the system 1, is assigned to AI1. AI1 is, internally, connected to CIN2_AI1 bgm From bundle 200, channel 2, the call signal from system 1, is assigned to AI2. AI2 is, internally, connected to CIN2_AI2 The result of these settings: BGM from system 1, is available on CobraNet interface output CIN2_AI1 bgm. Calls from system 1 are available on CobraNet interface output CIN2_AI AN CobraNet & PC CST 10-20

11 system 3: the receiver The loudspeaker zones: Assign amplifier output(s) to the loudspeaker zones. BGM channel Input CIN3_AI1 bgm is the input for BGM from the main system and is assigned to BGM channel BGM The name of this BGM channel, BGM, has to be the same as in the main system. Do not assign loudspeaker zones for default music routing. The setting will be overruled by the PC CST and will not be restored until a restart of the NCO. CobraNet configuration From bundle 200, channel 1, the BGM signal from the system 1, is assigned to AI1. AI1 is, internally, connected to CIN3_AI1 bgm From bundle 200, channel 2, the call signal from system 1, is assigned to AI2. AI2 is, internally, connected to CIN3_AI2 The result of these settings: BGM from system 1, is available on CobraNet interface output CIN3_AI1 bgm. Calls from system 1 are available on CobraNet interface output CIN3_AI AN CobraNet & PC CST 11-20

12 PC CST PC CST settings To be able to use the PC CST it has to be configured first. The program will warn you if certain settings are missing. Be careful; names of zones, messages, BGM channels etc. are case sensitive. Final GUI for the PC CST AN CobraNet & PC CST 12-20

13 Overall configuration screen Name or IP address Present Input : enter the IP address of all NCO s In this example : (system 1, main) (system 2, remote) (system 3, remote) : mark the NCO s in use : 1 st NCO is always the main NCO. Enter the CST name and add _AI1 e.g. cst_ai1 (_AI1 is the microphone of the CST) : 2 nd NCO and next Enter the name of the CobraNet interface input used for calls, e.g. CIN2_AI2 for system 2 User name Password Loop-through output Start chime End chime : User name of the specific NCO : Password of the specific NCO : Enter the zone, CallOut, assigned to CIN1_AO2, in the configuration : Select a start chime, if required : Select an end chime, if required AN CobraNet & PC CST 13-20

14 Fixed alarm : Select an alarm signal, if required Priority levels Standard : Priority level for Calls Alarms : Priority level for Alarm signals Update NC clock Partial calls BGM control User password Config password : Select the required option : Mark to enable Partial calls : Mark to enable BGM control : Password for the user to starts the PC CST : Password for the installer to configure PC CST Zone configuration system 1 Select the main NCO for the zone configuration: Enter the zone names, used in the configuration of system 1. Not all zones in the configuration have to be used in the PC CST. system 2 Select the NCO for the zone configuration: Enter the zone names, used in the configuration of system 2. Not all zones in the configuration have to be used in the PC CST AN CobraNet & PC CST 14-20

15 system 3 Select the NCO for the zone configuration: Enter the zone names, used in the configuration of system 3. Not all zones in the configuration have to be used in the PC CST. BGM configuration system 1 Select the main NCO for the BGM configuration: Channel name : Use the same BGM channel name as used in the configuration, i.e. BGM BGM loop-through : Enter the zone assigned to CobraNet for BGM in configuration in system 1, i.e. BGMOut. system 2 Select the NCO for the BGM configuration: Channel name : Use the same name as used in the configuration, i.e. BGM BGM loop-through : Not used; system 2 is receiving BGM from system AN CobraNet & PC CST 15-20

16 system 3 Select the NCO for the BGM configuration: Channel name : Use the same name as used in the configuration, i.e. BGM BGM loop-through : Not used; system 3 is receiving BGM from system 1. Save all settings and the final PC CST screen will appear in the screen. Final GUI for the PC CST AN CobraNet & PC CST 16-20

17 CobraNet configuration For the CobraNet configuration the CobraNet Discovery and the CNConfig program must be installed on the PC. CobraNet Discovery to identify the individual CobraNet units connected to the network and provide them with an IP address. CobraNet Discovery CNConfig to actually configure the individual CobraNet units. CNConfig, opening screen Important: CNConfig will not work without first starting CobraNet Discovery. CNConfig screen for the main CobraNet interface Check the IUI, Installation and User Instructions, for details on these programs AN CobraNet & PC CST 17-20

18 Unicast bundles, Multicast bundles and Bundle numbers - Multicast bundle: Multicast bundle numbers: A Multicast bundle can send audio to multiple receivers; a point to multi-point connection. The number of receivers is unlimited. When no receivers are connected the audio will still be send. Multicast bundles can be used for point to point connections as well. - Unicast bundle: Unicast bundle numbers: An Unicast bundle can send audio from one point to an other, a point to point connection. There can only be one receiver. When there are no receivers connected the audio will not be send. - Bundle numbers: 0 Bundle is switched disabled A bundle number can only have one transmitter. When a bundle number has more than one transmitters the transmitter with the highest priority will be active. The conductor on the CobraNet work will decide which transmitter will be active. A combination of unicast and multicast bundles can be in the same network. Additional information on CobraNet Peak Audio home page: Tested Ethernet products for CobraNet: Networks for CobraNet: FAQ on CobraNet: Paper: Audio networks, an overview: Paper: CobraNet Programmer s Reference: AN CobraNet & PC CST 18-20

19 Examples Multicast bundles AN CobraNet & PC CST 19-20

20 Examples Unicast bundles Multicast and unicast bundles AN CobraNet & PC CST 20-20