IBM ThinkPad R40e Manual Til Service Og Fejlfinding page 88

Some parameters required for compliance with Telecom's Telepermit require-
ments are dependent on the equipment (PC) associated with this modem. The
associated equipment shall be set to operate within the following limits for
compliance with Telecom's specification:
1. For automatically initiated calls to the same number
a. There shall be no more than 10 call attempts to the same number
b. The equipment shall go on-hook for a period of not less than 30
2. For automatically initiated calls to different numbers
The equipment shall go on-hook for a period of not less than 5 seconds
between the end of one attempt and the beginning of the next attempt.
3. Auto-answering incoming calls
Incoming calls shall be answered between 3 and 30 seconds of receipt of
ringing.
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ThinkPad R40 Serie Guide til service og fejlfinding
within any 30 minute period for a single manual call initiation, and
seconds between the end of one attempt and the beginning of the next
attempt.