®
MH88615
ONS Subscriber Line Interface Circuit
Advance Information
Features
•
•
ONS SLIC
Variants
- 1 Germany
- 3 UK
- 7 North America
•
•
•
•
•
•
•
•
Transformerless 2W to 4W conversion
Battery Feed to line
Off-Hook and dial pulse detection
Tip and Ring ground over-current protection
Power Denial
Integral Ringing Amplifier
Programmable Loop Current
Wide V
BAT
Operating Range
ISSUE 1
April 1995
Ordering Information
MH88615-1
MH88615-3
MH88615-7
20 Pin SIL Package
20 Pin SIL Package
20 Pin SIL Package
0°C to 70°C
Description
The Mitel MH88615 ONS SLIC provides a complete
interface between a switching system and a
subscriber loop. The functions provided by the
MH88615 include battery feed and integral ringing
amplifier feed to the subscriber line, 2W to 4W
conversion current feed, off-hook and dial pulse
detection. The device is fabricated as a thick film
hybrid in a 20 pin single-in-line package.
Applications
Line Interface for
• PABX
•
•
•
•
•
Pair Gain Systems
Satellite Communication Systems
Key Telephone Systems
Marine Systems
Cordless Local Loop
PD
VBat
DCRI
RV
Power Denial
Ringing Control
RC
TIP
RING
Tip &
Ring
Drivers
2-Wire to 4-Wire
Conversion
VR
VX
VRef
Constant
Current Feed
Loop
Supervision
CAP
SHK
Figure 1 - Block Diagram
2-139
MITEL [ MITEL NETWORKS CORPORATION ]
