US Robotics COURIER Manual do Utilizador descarregar pdf (Página 167)

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U.S. Robotics I-modem Command Reference

Testing • Page 14-5

Remote Digital Loopback Testing (&T6, &T7)

This test, like the local digital loopback test, veriÞes the condition of both devices and of

the phone line. Data ßow is shown in Figure 14-2.

Figure 14-2. Data Flow During Remote Digital Loopback

The request for and granting of remote digital loopback testing requires that both devices

use ITU-T V.22 standard signaling. If the remote device does not have the capability or is

not set to respond (with &T4), you will get an ERROR result code.

There are two remote digi-tal loopback options. If you select &T6, you send keyboard data

to the I-modem and verify it when it is returned over the phone lines and to your screen. If

you select &T7, the I-modem sends its internal test pattern and returns an error count to

your screen.

1 2 ... 162 163 164 165 166 167 168 169 170 171 172 ... 307 308

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