
NT7D16 Data Access card
Page 467 of 906
Circuit Card
Description and Installation
Mode 8
Host access for call
origination and answering
Host answering an incoming data call:
Local DM user dials the access number to initiate
the connection.
DAC responds by driving RI ON for 2 seconds and
OFF for 4 seconds until the Host answers by
turning DTR ON. (If the Host always drives DTR
ON, the DAC immediately answers the call
without driving RI ON.)
When Host receives RI ON, it should respond by
turning DTR ON.
DAC answers when it receives DTR ON.
DAC turns DSR, DCD, and CTS ON when the call
is completely established. The local DM user is
now transparently linked to the Host.
Host originating a data call:
Host turns DTR ON to initiate the connection.
DAC prepares to receive <CR> for autobaud.
Host sends <CR> followed by other commands
for establishing a data call (the DAC does not
echo a command, nor does it send any prompt to
the Host (blind dialing).
When the data call is completely established, the
DAC turns DSR, DCD, and CTS ON as long as
the call is connected.
Table 158
Connect and disconnect protocol (Part 7 of 12)
Mode of
operation
Interface application
Comments
Содержание Circuit Card
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Страница 4: ...Page 4 of 906 Revision history 553 3001 211 Standard 3 00 August 2005...
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Страница 156: ...Page 156 of 906 Option settings 553 3001 211 Standard 3 00 August 2005...
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Страница 388: ...Page 388 of 906 NT6D71 UILC Line card 553 3001 211 Standard 3 00 August 2005...
Страница 533: ...NT8D02 and NTDK16 Digital Line cards Page 533 of 906 Circuit Card Description and Installation Figure 106 NTDK16 DLC...
Страница 544: ...Page 544 of 906 NT8D02 and NTDK16 Digital Line cards 553 3001 211 Standard 3 00 August 2005...
Страница 546: ...Page 546 of 906 NT8D03 Analog Line card 553 3001 211 Standard 3 00 August 2005...
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Страница 626: ...Page 626 of 906 NT8D14 Universal Trunk card 553 3001 211 Standard 3 00 August 2005...
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Страница 694: ...Page 694 of 906 NT8D41BA Quad Serial Data Interface Paddle Board 553 3001 211 Standard 3 00 August 2005...
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Страница 734: ...Page 734 of 906 NTAK10 2 0 Mb DTI card 553 3001 211 Standard 3 00 August 2005...
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Страница 768: ...Page 768 of 906 NTAK93 D channel Handler Interface daughterboard 553 3001 211 Standard 3 00 August 2005...
Страница 772: ...Page 772 of 906 NTBK22 MISP card 553 3001 211 Standard 3 00 August 2005...
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Страница 906: ...Page 906 of 906 Appendix A LAPB Data Link Control protocol 553 3001 211 Standard 3 00 August 2005...
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