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參數資料
| 型號： | AG2120 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | FULLY FEATURED PSTN INTERFACE |
| 中文描述： | 全功能PSTN接口 |
| 文件頁數： | 8/14頁 |
| 文件大?。?/td> | 256K |
| 代理商： | AG2120 |
V2.0 October 2002
Advance Data Sheet
Silver Telecom 2002
Page 8
Ag2120
FULLY FEATURED PSTN INTERFACE
protection, the Ag2120 has been designed to interface
directly to the STM TPP25011.
This protection arrangement is shown in figure 6b.
5.0
Regulatory Standards
There are some aspects of international standards
which are not fully met by the Ag2120. These are
shown below. It is Silver Telecom’s policy to bring to
the attention of customers all known exceptions.
The Ag2120 meets the requirements of EN60950
(1992) paragraph 6.2.1.2 for all countries except
Norway and Sweden. Please contact Silver Telecom if
the product is needed for Norway or Sweden.
User/Network safety from mains power voltage
(UL1950/EN60950 paragraphs 2.1.1 and 6.2.1.4) must
be provided externally by a power supply with
reinforced or double insulation.
6.0 Layout
Signal tracks should be kept as short as possible.
Special attention should be paid to DMa and DMb, as
these are sensitive nodes.
Figure 6: Protection Options
Ag2120
RING
TIP
GATE
ANODE
CATHODE
Central Office Line
TPP250
hook
PTC
Central Office Line
Ag2120
RING
TIP
GATE
ANODE
CATHODE
PTC
X1
Fig 6a: Standard Protection
Fig 6b: Protection for Off-hook
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