Page 430 of 544
NT1R20 Off Premise Station (OPS) analog line card
553-3011-100
Standard 14.00
January 2002
Table 134
Call connection sequence—near-end station receiving call
State
Signal/Direction
Far-endNear-end
Remarks
Line card unit idle
Group on tip, battery on ring
High resistance loop
No battery current drawn.
Far-end station goes off-hook and
addresses (dials-up) the near-end
station. The Option 11C receives the
incoming call on a trunk and determines
the TN.
Incoming call
Ringing
Option 11C applies 20 Hz ringing to ring
lead.
Near-end station
off-hook
Low resistance loop
Two-way voice
connection
Option 11C detects increase in loop
current, tips ringing, and puts call through
to near-end station.
Near end station
hangs up first
High-resistance loop
If near end station hangs-up first, the line
card detects the drop in loop current.
Line card unit idle
Group on tip, battery on ring
High resistance loop
Line card unit is ready for the next call.
Far end station
hangs up first
High resistance loop
If the far-end hangs-up first, Option 11C
detects disconnect signalling from the
trunk. The person at the near-end
recognizes the end of the call and hangs-
up.
Line card unit idle
Ground on tip/battery on ring
High resistance loop
Line card unit is ready for the next call.
Summary of Contents for Meridian 1 Option 11C Mini
Page 2: ......
Page 8: ...Page 8 of 544 Contents 553 3011 100 Standard 14 00 January 2002 ...
Page 10: ...Page 10 of 544 About this guide 553 3011 100 Standard 14 00 January 2002 ...
Page 86: ...Page 86 of 544 Memory Storage and CPU capacity 553 3011 100 Standard 14 00 January 2002 ...
Page 176: ...Page 176 of 544 Transmission parameters 553 3011 100 Standard 14 00 January 2002 ...
Page 196: ...Page 196 of 544 Spares planning 553 3011 100 Standard 14 00 January 2002 ...
Page 226: ...Page 226 of 544 System Controller cards 553 3011 100 Standard 14 00 January 2002 ...
Page 260: ...Page 260 of 544 The TDS DTR card 553 3011 100 Standard 14 00 January 2002 ...
Page 282: ...Page 282 of 544 M2317 Telephone 553 3011 100 Standard 14 00 January 2002 ...
Page 308: ...Page 308 of 544 Meridian Modular Telephones 553 3011 100 Standard 14 00 January 2002 ...
Page 364: ...Page 364 of 544 M2250 Attendant Console 553 3011 100 Standard 14 00 January 2002 ...
Page 388: ...Page 388 of 544 NT8D14 Universal Trunk Card 553 3011 100 Standard 14 00 January 2002 ...
Page 408: ...Page 408 of 544 NT5K21 XMFC MFE card 553 3011 100 Standard 14 00 January 2002 ...
Page 414: ...Page 414 of 544 NTAG26 XMFR card 553 3011 100 Standard 14 00 January 2002 ...
Page 422: ...Page 422 of 544 NT6D71 UILC line card 553 3011 100 Standard 14 00 January 2002 ...
Page 492: ...Page 492 of 544 NTAK79 2 0 Mb PRI card 553 3011 100 Standard 14 00 January 2002 ...
Page 512: ...Page 512 of 544 NTAK20 clock controller 553 3011 100 Standard 14 00 January 2002 ...
Page 518: ...Page 518 of 544 NTAK93 D channel handler interface 553 3011 100 Standard 14 00 January 2002 ...
Page 544: ...Page 544 of 544 Index 553 3011 100 Standard 14 00 January 2002 ...
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