US Robotics COURIER Manual de usuario descargar pdf (Pagina 171)

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101

U.S. Robotics I-modem Command Reference

Testing • Page 14-9

When the test ends, the I-modem returns a three-digit code, followed by OK. A code of

000 indicates no errors were found; a code of 255 indicates 255 or more errors.

Data errors indicate a problem with the remote device or with the phone link.

6. Send AT&M4, unless you used a reset command (ATZ or ATZ!).

Testing the I-modem Using S16

instructions for setting bit-mapped registers.)

Note Earlier U.S. Robotics modems require bit 3 to be enabled to grant digital

loopback testing to a remote device. The I-modem requires its default &T4

Table 14Ð1. S-register 16

Bit Value Function

2 4 Remote digital loopback with built-in test pattern

3 8 Remote digital loopback using keyboard data

1 2 ... 166 167 168 169 170 171 172 173 174 175 176 ... 307 308

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US Robotics COURIER Manual de usuario Pagina 171

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