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2.0 Mb DTI/PRI Administration and Maintenance Guide Book ... - Home

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Page 1000 of 1536 Chapter 11 — ISL Implementation <strong>and</strong> <strong>Maintenance</strong><br />

ISL in Dedicated Mode using Dial-up modem<br />

The requirements are as follows:<br />

— NTAK02 SDI/DCH D-channel H<strong>and</strong>ler Interface<br />

— Modems such as Ventel 2400, Hayes 2400 (the Hayes Smartmodem<br />

2400 cannot be used on leased lines) or G<strong>and</strong>alf 2400 that can support 2<br />

or 4-wire leased line operation (4-wire operation must be specified when<br />

ordering otherwise modems are factory shipped for 2-wire operation).:<br />

• autodial capability<br />

• minimum of 2400 baud<br />

• synchronous operation<br />

• programmable so that one modem originates the call while the other<br />

auto-answers<br />

— NTAK19BA 4 Port SDI Cable<br />

— NT8D09 500 set line card<br />

Figure 134<br />

ISL in Dedicated Mode using Dial-up Modem<br />

Meridian 1<br />

Option 11<br />

NTAK02<br />

DCHI<br />

500<br />

line<br />

TIE<br />

TIE<br />

553-3011-315 St<strong>and</strong>ard 10.0 May 1999<br />

NTAK19BA QCAD42A<br />

twisted<br />

pair<br />

modem<br />

ISL D-channel<br />

ISL TIE trunks<br />

modem<br />

twisted<br />

pair<br />

Meridian 1 or SL1<br />

DCHI<br />

500<br />

line<br />

TIE<br />

TIE

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