Technical information

Warranties and Notices
Storage of Numbers
1. It is advisable to check the telephone numbers stored in your modem
immediately after programming, and also after changing the battery in the CPU.
2. To prevent the misdirection of calls and network interference, ensure that all
manually programmed telephone numbers are correctly entered.
3. The number you enter to dial might optionally contain a PAUSE character to
allow this modem to operate with a PABX. This takes the form:
ACCESS DIGIT + PAUSE CHARACTER + NUMBER TO BE DIALLED
Where the access digit is the number you have to dial to get an outside line, the
pause character for this modem is a “,” (comma). The pause character inserts a
4-second delay.
4. This modem can only be used with the DAA P/N 59G1045.
Voice/Telephone Connection
To comply with the British Approvals Board Telecommunications (BABT)
requirements the IBM ThinkPad 755CX voice connection application programs must
be designed with the following considerations:
Auto-Calling
1. Network addresses
When using the auto-calling to initiate outgoing calls to the PSTN, the user
must ensure all manually entered network address are correctly programmed.
Any adjustments which might affect compliance with the U.K. requirements
are described in the User and Installation Guide. These adjustments can be
made only by authorized personnel.
2. Resolution
The decision-making process for resolution user call progress tones and is
internal to ThinkPad 755CX. The user selects the appropriate modes of
operation for using the feature.
3. Repeat attempts
The IBM ThinkPad 755CX can determine when to initiate a new call attempt
to a number over the PSTN after an ineffective attempt to the same number.
This is called repeat attempt feature.
The number of repeat call attempts and the minimum durations between
these repeat attempts must follow one of the call patterns specified in the
following table.
Appendix E. Product Warranties and Notices
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