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Test Mode Operation
If Digital Bilateral Loopback is enabled locally, the local DTE is looped
back to itself (Table 7-3). If disabled, the local DTE receives a constant
mark.
Grant/Deny RDL Request &T4, &T5
Local operators can deny a request from the remote modem for remote
digital loopback.
To
Enter AT&T4
To
Enter AT&T5
7-6
Figure 7-3 Local Digital Loopback
with Bilateral Loopback Enabled
Allow your modem to be placed in RDL by a
remote operator
Prevent your modem from entering RDL
V.3400
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