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參數(shù)資料
| 型號： | MH88634K |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Central Office Interface Circuit Preliminary Information |
| 中文描述： | 中央辦公室接口電路的初步信息 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 66K |
| 代理商： | MH88634K |
2-262
MH88634K
Preliminary Information
Figure 2 - Pin Connections
Pin Description
Pin #
Name
Description
1
TIP
Tip Lead.
Connects to the “Tip” lead of the central office
2
RING
Ring Lead:
Connects to the “Ring” lead of the central office
3
XLA
Loop Relay Contact A:
. Connects to XLB through the Loop relay (K1) contacts when the
relay is activated. This operates the internal active termination circuitry.
4
XLD
Loop Relay Contact D:
See XLC for description
5
XLB
Loop Relay Contact B:
See XLA for description
6
XLC
Loop Relay Contact C:
Connects to XLD through the loop relay (K1) contacts when the
relay is activated. This operates the internal active termination circuitry.
7
IC
Internal Connection:
This pin is internally connected and must be left open.
8
IC
Internal Connection.:
This pin is internally connected and must be left open.
9
IC
Internal Connection:
This pin is internally connected and must be left open.
10
SO
Service Out Detect (Output).
A logic low indicates that the central office “Tip” and “Ring”
are out of service.
11
Rx
Receive (Input):
4-Wire ground (AGND) referenced audio input.
12
VEE
Negative Supply Voltage.
-5V
13
Tx
Transmit (Output).
4-Wire ground (AGND) referenced audio output.
14
RV
Ring Voltage Detect (Output).
A logic low indicates that ringing voltage is across the Tip
and Ring leads. Note that this output toggles at the ringing cadence and not at the ringing
frequency.
15
FL
Forward Loop Detect (Output).
In the on-hook state, a logic low output indicates that
forward loop battery is present. In the off-hook state, a logic low indicates that forward loop
current is present
16
RL
Reverse Loop Detect (Output):
In the on-hook state, a logic low output indicates that
reverse loop battery is present. In the off-hook state, a logic low output indicates that reverse
loop current is present. Reverse loop refers to the Tip lead negative respect to the Ring lead.
TIP
RING
XLA
XLD
XLB
XLC
IC
IC
IC
SO
Rx
VEE
Tx
RV
FL
RL
VDD
AGND
LRC
VRLY
LRD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
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| MH89625C-5 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:OPS/DID PCM SLIC Preliminary Information |
| MH89625C-6 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:OPS/DID PCM SLIC Preliminary Information |
| MH89626C | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:OPS/DID SLIC Preliminary Information |
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