Description Of The Main Board - Alpha Technologies IP Bell – 01 User And Installation Manual

1.4.2 Description of the main board

1. trimmer for setting level of surrounding illumination (sensor – 10). During
the call, at the set level, camera illumination will be switched on (white
LEDs - 9
) – applies to camera models only
2. echo cancellation trimmer. The IP Bell doorphone is a hands-free
telephone. Any sound comming to the speaker is received by the
microphone and sent back with a delay (echo). To compensate this, the IP
Bell uses a circuit for reducing the amplification path of the microphone
depending on the level of incomming signal. This level can be set by the
Echo cancellation trimmer (2).
3. trimmer for setting sensitivity of the microphone
4. trimmer for setting volume of the speaker
5. connector for connection of the speaker (glued on in the front case of the
housing)
6. PoE power supply module
7. camera (Microsoft LifeCam VX700)
8. signal LED of the IP Bell doorphone status
9. LED for camera illumination when surrunding light is insufficient - 4x white
LED, active during a call only, they can be switched off by SW setting
applies to camera models only
10. sensor of surrounding light level
11. VoIP module - green LED – power supply of VoIP module
12. VoIP module – green LED – LAN connection, yellow LED –
data transmission over LAN
13. DIP switch – selection of mode and basic settings
14. connector for connection the expansion module Bell-8
15. terminal of the 2
16. terminal of the 1
17. connection of 12V. When PoE is not used, then this is the input of 12V
AC/DC
18. connectors for powering the low-consumption electrical lock when PoE
power supply is used. For easy installation you can use yellow cable with
connector (fig. 5). This is 12V DC output only! Do not connect to the
power supply!
19. connection to LAN, it is connected by UTP cable CAT5. This connection is
compatible with 10/100/1G network and PoE according to norm
IEEE802.3af mode A and mode B. Data connection 10Base-T and
100Base-TX supported
20. connection of pushbuttons to the main board
21. microphone
22. connection of visit cards illumination to the main
board
10
– applies to camera models only
nd
switch (switching contact)
st
switch (switching contact)
– applies to camera models only
– applies to camera models only
IP Bell
- User guide and installation manual
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