School System Questionnaire

Transcription

1 This Document Is Intended To Be Viewed In PDF Format School System Questionnaire For Full IP School Intercom Systems, go to page 31 Rev For Use with Version 3.10, or higher, System Design Tool. The System Design Tool is available on or here. Check for Updates Here (PDF) and Here (Microsoft Word) Hollins Rd. Roanoke, VA Page 1 of 34

2 Founded in 1977, Valcom is the largest manufacturer of integrated paging systems in the world and is the product of choice for thousands of integrators and their customers worldwide. Our products are marketed through established, local direct distributors and integrators. Valcom offers a wide variety of products providing the best public address/intercom systems and emergency mass notification solutions for schools, universities, airports, hospitals and for your facility as well. Valcom has long capitalized on the many advantages of using low voltage cabling and distributed amplification. Both our Self Amplified One Way analog and IP based systems offer distinct advantages over previous technologies. All of our products are proudly manufactured in our state of the art facilities in Roanoke, Virginia, USA. Valcom s Engineered Systems Division specializes in large, sophisticated school intercom, and scalable Emergency Mass Notification Solutions. Our past clients include major universities, government entities, medical and transportation facilities. Our product offering is extremely comprehensive. We have regional product experts available nationwide. They are eager to discuss a solution tailored to your specific mass communication or school intercom requirements. We encourage you to contact us today. For our General Public Address and Intercom System Design Guidelines click here Hollins Rd. Roanoke, VA Page 2 of 34

3 Consider this As concern for crisis preparedness grows, K-12 facilities often require both an emergency notification system and a bell/clock/intercom system. A cost effective approach is selecting an emergency notification system that also offers all of the functions of a bell/clock/intercom system. Benefits of this approach include: 1) Labor savings. Stand-alone emergency notification systems, even supervised systems, must be tested periodically to verify operation. By utilizing the system daily for intercom and general announcements, operational testing requires little or no additional effort. 2) Significant cost saving: a. Using speakers, visual messaging LED signs and core equipment for both emergency notification and daily intercom/paging saves on equipment and infrastructure costs b. Installation cost to install one comprehensive system will be less that installation cost for 2 separate systems 3) One system results in less maintenance. 4) One system results in less training. 5) Daily use means that periodic refresher training is unnecessary Hollins Rd. Roanoke, VA Page 3 of 34

4 The minimal information required to design a school intercom system is: Is this a new or retrofit system? How many classrooms? Are call buttons required in the classrooms? How many offices will need an intercom speaker? What type ceilings are in the different areas? Specifically, are they 2 foot wide drop ceiling? How many outside horns do they need? How many speakers and what type will be required for other areas like the cafeteria, gymnasium and auditorium. How long is each hallway and how high are the ceilings in the hallways. In addition to this minimal information, a much better design requires the following info: 1) Which classrooms, hallways and other areas will connect to which IDF, or to the MDF. You can determine this by looking at the prints, picking logical IDF locations and assigning the classrooms, offices and common areas to each based upon logical wire routing. 2) Any and all locations that will require clocks and what type of clocks they want. 3) How the school would like to zone the hallways. This could be anywhere from a single zone for each hallway to a single zone for all hallways. 4) Any other special requirements (door unlock, distributions, CD player, local sound reinforcement for the gym, etc) The following questionnaire may be used as a guide in determining this information Hollins Rd. Roanoke, VA Page 4 of 34

5 MDF MDF MDF Area A Area A Area A IDF 1 IDF 1 IDF 1 IDF 2 IDF 2 IDF 2 IDF 3 IDF 3 IDF 3 Area B Area B Area B IDF 4 IDF 4 IDF 4 IDF 5 IDF 5 IDF 5 IDF 6 IDF 6 IDF 6 Area C Area C Area C Figure 1 Figure 2 Figure 3 When designing a public address/intercom system with limited information such as speaker & clock counts, speaker & clock types and the total number of zones for each area, you have to make assumptions. Assuming that all of the control equipment will be physically located in one location (MDF) will typically result in a less than ideal design. The diagrams above represent designs with one zone, two zones and six zones respectively with all of the control equipment located in the MDF. Determining the equipment lists for these would be very simple, however, since all speakers and clocks are being powered from the MDF, your installation costs would increase due to the need for more and often heavier gauge, cabling Hollins Rd. Roanoke, VA Page 5 of 34

6 MDF MDF MDF Area A Area A Area A IDF 1 IDF 1 IDF 1 IDF 2 IDF 2 IDF 2 IDF 3 IDF 3 IDF 3 Area B Area B Area B IDF 4 IDF 4 IDF 4 IDF 5 IDF 5 IDF 5 IDF 6 IDF 6 IDF 6 Area C Area C Area C Figure 4 Figure 5 Figure 6 A better design would involve knowledge of each IDF s required speaker & clock quantity, speaker & clock type and zone count. This way, it s possible to design so that control & support equipment may be selected on a per IDF basis. This reduces cost by minimizing required cable gauge and the number of MDF distribution cables Hollins Rd. Roanoke, VA Page 6 of 34

7 LAN MDF LAN MDF Area A Area A LAN IDF 1 IDF 2 IDF 3 LAN Multi-zone Multi-zone IDF 1 IDF 2 Zone 1 Zone 2 Zone 1 Zone 2 Area B Area B LAN IDF 4 IDF 5 IDF 6 LAN Multi-zone Multi-zone IDF 1 IDF 2 Zone 1 Zone 2 Zone 1 Zone 2 Area C Area C Figure 7 Figure 8 Sometimes analog designs involve using Ethernet to distribute audio. This may be accomplished by using VERCA cards, VECPU6-EP cards, audio gateways, and/or IP speakers. If the design has only one zone per IDF, as shown in Figure 7, then we ll need to know how many IDFs will be involved, and the quantity and types of speakers & clocks that will be connected to each. If the design involves multiple zones per IDF, as shown in Figure 8, then you will need to know how many IDFs will be involved, the quantity and types of speakers that will be connected to each and how many zones each IDF will serve. It s common to have both single zone IDFs and multi-zone IDFs in the same design Hollins Rd. Roanoke, VA Page 7 of 34

8 LAN IDF LAN IDF Area A Area A LAN IDF 1 IDF 2 IDF 3 LAN Multi-zone Multi-zone IDF 1 IDF 2 Zone 1 Zone 2 Zone 1 Zone 2 Area B Area B LAN IDF 4 IDF 5 IDF 6 LAN Multi-zone Multi-zone IDF 1 IDF 2 Zone 1 Zone 2 Zone 1 Zone 2 Area C Area C Figure 9 Figure 10 If a design is fully IP based, meaning every speaker and horn is an endpoint on the network, then you just need total speaker counts per type. Full IP systems are, by far, the easiest type to design and implement. If a design is IP based, but involves audio gateways to analog speakers, then the same questions will apply: If the design has only one zone per IDF, as shown in Figure 9, then you need to know how many IDFs will be involved, and the quantity and types of speakers that will be connected to each. If the design involves multiple zones per IDF, as shown in Figure 10, then you simply need to know how many IDFs will be involved, and the quantity and types of speakers that will be connected to each and how many zones each IDF will serve Hollins Rd. Roanoke, VA Page 8 of 34

9 School System Questionnaire Here are some guidelines for speaker selection: Ceiling speakers spaced at twice the ceiling height provide the most even sound coverage. Areas with 2' wide drop ceiling - use lay In ceiling speakers spaced at twice the ceiling height. Areas with concrete ceilings - use square surface mount ceiling speakers spaced at twice the ceiling height or wall speakers spaced 20 feet apart. Any area with 1 or 2 speakers may be talkback (it may cost less than one way if the zones are available). For gyms and outside, use 5-Watt horns (one per 10,000 square feet). Areas that may get wet should use horns. Smaller areas that require horns may use Flex Horns. Cafeterias with 2' wide drop ceiling - use lay In speakers spaced at twice the ceiling height. Otherwise use 5 Watt horns (one per 10,000 square feet). How many classrooms? How many classrooms will require call buttons? How many classrooms will require a new speaker? What type? If ceiling speakers, what type ceilings does the school have? If speakers exist, what type are they? Does the school want the system to synchronize existing clocks? Hollins Rd. Roanoke, VA Page 9 of 34

10 What correction protocol do they use? Does the school need new clocks? Quantity required? Would the school like a large display for the office area to indicate incoming calls? Would the school like to add a microphone for general one-way announcements? Would the school like a Program Distribution Panel to simplify music source adjustment, provide command switch inputs for emergency tones and provide a user-friendly microphone input? Does the school want the system to control Electric Door Locks? If so, how many? How many vacant loop start line ports are available on the school's telephone system? Ports System will be stand-alone In the case of retrofits, is the school using the current intercom to control their media retrieval system? If so, a new media retrieval system will be required. Other: Hollins Rd. Roanoke, VA Page 10 of 34

11 Distribution Point Number of talkback zones Number of one way zones Will Clocks Be Corrected From This Location?* Define the main distribution frame (MDF) and all Remote Intermediate Distribution Frames (RIDFs). Determine the number of one way and talkback zones that will originate from the MDF and each RIDF. Note if secondary clocks will be corrected in the RIDF areas. Equipment Location MDF RIDF 1 RIDF 2 RIDF 3 RIDF 4 RIDF 5 RIDF 6 RIDF 7 RIDF 8 RIDF 9 RIDF 10 RIDF 11 RIDF 12 RIDF 13 RIDF 14 RIDF 15 If existing clocks are involved, what correction protocol do they use? Hollins Rd. Roanoke, VA Page 11 of 34

12 Connect this zone via Ethernet? Describe all common areas below - If the common area will only be called as part of all call then mark "all call only", otherwise mark "zone" to indicate that this area will require its own station output. Areas that will receive all call only can share a single station output (a single point). Area Description This zone will originate from (MDF, IDF or RIDF number) Need to call this area independently or only during all call? Cafeteria (Zone) (All Call Only) Gymnasium (Zone) (All Call Only) Playground (Zone) (All Call Only) Outside (Zone) (All Call Only) Bus Loading Area (Zone) (All Call Only) Student Parking Area (Zone) (All Call Only) 1 st grade hallways (Zone) (All Call Only) 2 nd grade hallways (Zone) (All Call Only) 3 rd grade hallways (Zone) (All Call Only) 4 th grade hallways (Zone) (All Call Only) 5 th grade hallways (Zone) (All Call Only) 6 th grade hallways (Zone) (All Call Only) 7 th grade hallways (Zone) (All Call Only) 8 th grade hallways (Zone) (All Call Only) 9 th grade hallways (Zone) (All Call Only) 10 th grade hallways (Zone) (All Call Only) 11 th grade hallways (Zone) (All Call Only) 12 th grade hallways (Zone) (All Call Only) (Zone) (All Call Only) (Zone) (All Call Only) (Zone) (All Call Only) (Zone) (All Call Only) (Zone) (All Call Only) (Zone) (All Call Only) (Zone) (All Call Only) Quantity/Type of Clocks (clock correction may not be available from Ethernet Connected zones) List other requirements on a separate sheet Hollins Rd. Roanoke, VA Page 12 of 34

13 Point # C o n f i g u r a t i o n T o o l W o r k S h e e t f o r S e l f - A m p l i f i e d O n e W a y P a g e A r e a s Cafeteria Gymnasium Playground Outside Bus Loading Area Student Parking Area 1 st grade hallways 2 nd grade hallways 3 rd grade hallways 4 th grade hallways 5 th grade hallways 6 th grade hallways 7 th grade hallways 8 th grade hallways 9 th grade hallways 10 th grade hallways 11 th grade hallways 12 th grade hallways Description Speaker Type Quantity Power Units Required For This Area Hollins Rd. Roanoke, VA Page 13 of 34

14 Point # C o n f i g u r a t i o n T o o l W o r k S h e e t f o r 25- V o l t O n e W a y P a g e A r e a s Description Speaker Type Quantity Wattage Required For This Area Cafeteria Gymnasium Playground Outside Bus Loading Area Student Parking Area 1 st grade hallways 2 nd grade hallways 3 rd grade hallways 4 th grade hallways 5 th grade hallways 6 th grade hallways 7 th grade hallways 8 th grade hallways 9 th grade hallways 10 th grade hallways 11 th grade hallways 12 th grade hallways Hollins Rd. Roanoke, VA Page 14 of 34

15 From Point # To Point # This zone will originate from (MDF, IDF or RIDF number) Connect this zone via Ethernet? Call Button? S = Standard E = Emergency C o n f i g u r a t i o n T o o l W o r k S h e e t f o r T a l k b a c k A r e a s Description Speaker Type Clock Type Quantity Typical Classroom Teacher s Lounge Boy s Locker Room Girl s Locker Room Art Room Front Door* * If electric door lock control is desired add a V-URI for every 8 doors Hollins Rd. Roanoke, VA Page 15 of 34

16 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations If your VECPU5 design will incorporate VETCM, PETCM24 or VETCS Station cards located in Ethernet accessed remote IDFs, the MDF and each Remote IDF (RIDF) will be set up to provide between 24 and 360 zones each. The sum of all zones must not exceed 360. Use this chart to determine which increments of 24 zones will originate from the MDF and each RIDF. Also note if the range of stations will be one-way only, talkback only, or a combination of one way and talkback. Copy the chart as required to assign each zone (station) to either the MDF or to a RIDF (see example below). We suggest that you review the system organizational chart shown at the end of this example prior to reviewing the 4 example worksheets. Example Page 1 MDF / RIDF Location MDF MDF RIDF1 RIDF1 RIDF2 RIDF2 RIDF3 One Way, Talkback or Mixed TB TB Mixed Mixed TB 1W TB Classroom 101 Classroom 102 Classroom 103 IP Classroom Classroom Classroom 106 Classroom Classroom Classroom 109 Classroom Classroom Classroom 112 Classroom 113 Classroom 114 Classroom Classroom Classroom Classroom Classroom Classroom Total Number of zones (stations) assigned to each column (must be <= 24) This example is simply intended to explain the optional distribution using Remote IDFs (RIDFs). When using RIDFs, system feature cards (VETCM,, VETCS, PETCM12, PETCM24, VEST and V-URI) may be located in locations close to the zones they are serving. 1) Assign each group of 24 stations to the location where the equipment will be located (MDF, RIDF1, RIDF2... etc. 2) Assign each zone or station to one of your defined locations. Enter an x to indicate that the station will connect directly to the MDF/RIDF or enter a number indicative of the IDF location originating from the MDF/RIDF Hollins Rd. Roanoke, VA Page 16 of 34

17 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Example Page 2 MDF / RIDF Location MDF MDF RIDF1 RIDF1 RIDF2 RIDF2 RIDF3 One Way, Talkback or Mixed TB TB Mixed Mixed TB 1W TB Classroom Classroom Classroom Classroom Classroom 125 Classroom 126 Classroom Classroom 128 Classroom Classroom 130 Classroom 131 Classroom 132 Classroom 133 Classroom 134 Classroom 135 Classroom 136 Classroom 137 Classroom 138 Classroom 139 Classroom 140 Total Number of zones (stations) assigned to each column (must be <= 24) Hollins Rd. Roanoke, VA Page 17 of 34

18 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Example Page 3 MDF / RIDF Location MDF MDF RIDF1 RIDF1 RIDF2 RIDF2 RIDF3 One Way, Talkback or Mixed TB TB Mixed Mixed TB 1W TB Classroom 141 Classroom 142 Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Total Number of zones (stations) assigned to each column (must be <= 24) Hollins Rd. Roanoke, VA Page 18 of 34

19 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Example Page 4 MDF / RIDF Location MDF MDF RIDF1 RIDF1 RIDF2 RIDF2 RIDF3 One Way, Talkback or Mixed TB TB Mixed Mixed TB 1W TB Classroom Classroom Classroom 163 Classroom 164 Classroom 165 Classroom 166 Classroom 167 Classroom 168 Classroom 169 Classroom 170 Classroom 171 Classroom 172 Main Hallway 1 Entrance 1 Bus Loading Area 1 Cafeteria 1 Lower Level Hallway Gymnasium E Upper Level Hallway North Outside Wall Total Number of zones (stations) assigned to each column (must be <= 24) Hollins Rd. Roanoke, VA Page 19 of 34

20 MDF Main Distribution Frame VECPU-5 2 VETCM 1 VERCA IDF1 Intermediate Distribution Frame Zones 101, 102, 125, 126, 128, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142. Zone 103 is assigned here but is an IP Talkback Speaker Zones 104, 121, 122, 123, 124, 127, 129 Ethernet IDF Gymnasium RIDF1 Remote Intermediate Distribution Frame 2 VETCM 1 VERCA RIDF2 Remote Intermediate Distribution Frame 1 VETCM 1 VEST 1 VERCA RIDF3 Remote Intermediate Distribution Frame 1 VETCM 1 VERCA Zones 106, 109, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172 IDF1 Intermediate Distribution Frame IDF1 Intermediate Distribution Frame IDF2 Intermediate Distribution Frame Lower Level Hallway, Upper Level Hallway, North Outside Wall. Gymnasium is assigned here but is connected via Ethernet Zones 112, 113, 114 Zones 105, 115, 116, 117, 118, 119, 120, 161, 162, Main Hallway, Entrance, Bus Loading, Cafeteria Zones 107, 108, 147, 148, 153, 154, 160 Zones 110, 111, 143, 144, 145, 146, 149, 150, 151, 152, 155, 156, 157, 158, 159 IP Talkback Speaker Zone 103 Visual Representation of Example For VECPU5 System Hollins Rd. Roanoke, VA Page 20 of 34

21 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Worksheet for VECPU5 systems using VETCM, PETCM24, VEST or VETCS Station Cards MDF / RIDF Location One Way, Talkback or Mixed Total Number of zones (stations) assigned to each column (must be <= 24) Hollins Rd. Roanoke, VA Page 21 of 34

22 Stations 1-13 Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Stations Worksheet for VECPU5 systems using PETCM12 Station Cards MDF / RIDF Location One Way, Talkback or Mixed Total Number of zones (stations) assigned to each column (must be <= 13. One of the 13 zones must be one way) Hollins Rd. Roanoke, VA Page 22 of 34

23 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations If your VECPU6 design will incorporate VETCM, PETCM24 or VETCS Station cards located in Ethernet accessed remote IDFs, the MDF and each Remote IDF (RIDF) will be set up to provide between 24 and 192 zones. Use this chart to determine which increments of 24 zones will originate from each RIDF. Also note if the range of stations will be one-way only, talkback only, or a combination of one way and talkback. Copy the chart as required to assign each zone (station) to either the MDF or to a RIDF (see example below). We suggest that you review the system organizational chart shown at the end of this example prior to reviewing the 4 example worksheets. Example Page 1 MDF / RIDF Location MDF MDF RIDF1 RIDF1 RIDF2 RIDF2 RIDF3 One Way, Talkback or Mixed TB TB Mixed Mixed TB 1W TB Classroom 101 Classroom 102 Classroom 103 Classroom Classroom Classroom 106 Classroom Classroom Classroom 109 Classroom Classroom Classroom 112 Classroom 113 Classroom 114 Classroom Classroom Classroom Classroom Classroom Classroom Total Number of zones (stations) assigned to each column (must be <= 24) This example is simply intended to explain the optional distribution using Remote IDFs (RIDFs). When using RIDFs, system feature card (VETCM,, VETCS, PETCM12, PETCM24 and V-ST) may be located in locations close to the zones they are serving. 1) Assign each group of 24 stations to the location where the equipment will be located (MDF, RIDF1, RIDF2... etc. 2) Assign each zone or station to one of your defined locations. Enter an x to indicate that the station will connect directly to the MDF/RIDF or enter a number indicative of the IDF location originating from the MDF/RIDF Hollins Rd. Roanoke, VA Page 23 of 34

24 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations Example Page 2 MDF / RIDF Location MDF MDF RIDF1 RIDF1 RIDF2 RIDF2 RIDF3 One Way, Talkback or Mixed TB TB Mixed Mixed TB 1W TB Classroom Classroom Classroom Classroom Classroom 125 Classroom 126 Classroom Classroom 128 Classroom Classroom 130 Classroom 131 Classroom 132 Classroom 133 Classroom 134 Classroom 135 Classroom 136 Classroom 137 Classroom 138 Classroom 139 Classroom 140 Total Number of zones (stations) assigned to each column (must be <= 24) Hollins Rd. Roanoke, VA Page 24 of 34

25 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations Example Page 3 MDF / RIDF Location MDF MDF RIDF1 RIDF1 RIDF2 RIDF2 RIDF3 One Way, Talkback or Mixed TB TB Mixed Mixed TB 1W TB Classroom 141 Classroom 142 Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Classroom Total Number of zones (stations) assigned to each column (must be <= 24) Hollins Rd. Roanoke, VA Page 25 of 34

26 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations Example Page 4 MDF / RIDF Location MDF MDF RIDF1 RIDF1 RIDF2 RIDF2 RIDF3 One Way, Talkback or Mixed TB TB Mixed Mixed TB 1W TB Classroom Classroom Classroom 163 Classroom 164 Classroom 165 Classroom 166 Classroom 167 Classroom 168 Classroom 169 Classroom 170 Classroom 171 Classroom 172 Main Hallway 1 Entrance 1 Bus Loading Area 1 Cafeteria 1 Lower Level Hallway Gymnasium (NOTE 1) Upper Level Hallway North Outside Wall Total Number of zones (stations) assigned to each column (must be <= 24) Note 1 - An IP speaker will be used for the gymnasium and does not utilize an analog station Hollins Rd. Roanoke, VA Page 26 of 34

27 MDF Main Distribution Frame VECPU6 2 VETCM IDF1 Intermediate Distribution Frame Zones 101, 102, 125, 126, 128, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 103 Zones 104, 121, 122, 123, 124, 127, 129 Ethernet IDF Gymnasium RIDF1 Remote Intermediate Distribution Frame 2 VETCM 1 VECPU6-EP RIDF2 Remote Intermediate Distribution Frame 1 VETCM 1 VEST 1 VECPU6-EP RIDF3 Remote Intermediate Distribution Frame 1 VETCM 1 VECPU6-EP Zones 106, 109, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172 IDF1 Intermediate IDF1 Intermediate IDF2 Intermediate Lower Level Hallway, Upper Level Hallway, North Outside Wall. Zones 112, 113, 114 Distribution Frame Distribution Frame Distribution Frame Zones 105, 115, 116, 117, 118, 119, 120, 161, 162, Main Hallway, Entrance, Bus Loading, Cafeteria Zones 107, 108, 147, 148, 153, 154, 160 Zones 110, 111, 143, 144, 145, 146, 149, 150, 151, 152, 155, 156, 157, 158, 159 IP Talkback Speaker Zone 103 Visual Representation of Example For VECPU6 System Hollins Rd. Roanoke, VA Page 27 of 34

28 Stations 1-24 Stations Stations Stations Stations Stations Stations Stations Worksheet for VECPU6 systems using VETCM, PETCM24, VEST or VETCS Station Cards MDF / RIDF Location One Way, Talkback or Mixed Total Number of zones (stations) assigned to each column (must be <= 24) Hollins Rd. Roanoke, VA Page 28 of 34

29 Stations 1-13 Stations Stations Stations Stations Stations Stations Stations Worksheet for VECPU6 systems using PETCM12 Station Cards MDF / RIDF Location One Way, Talkback or Mixed Total Number of zones (stations) assigned to each column (must be <= 13. One of the 13 zones must be one way) Hollins Rd. Roanoke, VA Page 29 of 34

30 Other Notes: Hollins Rd. Roanoke, VA Page 30 of 34

31 Ethernet Based School Intercom Systems Ethernet based intercom systems are also known as Full IP Intercoms. If these systems include analog speakers and other non-ip equipment connected to end points they are referred to as hybrid systems. Analog speakers, clocks and other non-ip equipment may require AC Power and or space for power supply or other support device installation. Ethernet Distribution Points, known as EDPs, allow users to define locations where amplifiers for 25-volt speakers, power supplies for One Way Self Amplified, equipment racks and any equipment required for correcting wired clocks will be installed. For your convenience, EDPs should be provided with names representative of their physical location. All system EDPs will contain end points that interconnect via POE switch ports on a fully multicast enabled, switched 10/100MB LAN or VLAN. Ethernet based intercoms that do not feature wired clocks or non-ip (analog) speakers only require a single EDP. In Ethernet Based Intercom Systems, multiple locations are interconnected via an Ethernet network. Ethernet Distribution Points must be added for each combination of endpoints that will share a common location for locations where amplifiers for 25-volt speakers, power supplies for One Way Self Amplified, equipment racks and any equipment required for correcting wired clocks will be installed. There are a variety of system gateways are available for interface between the and analog portions of your design. Click here for details - In order to design a hybrid Ethernet Based school intercom system, users may use the following worksheet to determine what analog support equipment will be required at each EDP Hollins Rd. Roanoke, VA Page 31 of 34

32 EDP Name Ethernet Based Intercom Worksheet Endpoint Type & Quantity Clock Type & Quantity Analog Speaker Type & Quantity Note Hollins Rd. Roanoke, VA Page 32 of 34

33 EDP Name Ethernet Based Intercom Worksheet Endpoint Type & Quantity Clock Type & Quantity Analog Speaker Type & Quantity Note Hollins Rd. Roanoke, VA Page 33 of 34

34 Other Notes: Hollins Rd. Roanoke, VA Page 34 of 34