Regulatory Notices

Call Attempt

Minimum duration between call attempts for call

 

pattern

 

 

 

 

Attempts

A

 

B

C

D

 

Initial attempt

5S

5S

5S

5S

 

1st repeat attempt

1

min

2 min

10 min

3

min

2nd repeat attempt

1

min

2 min

10 min

3

min

3rd repeat attempt

1

min

2 min

10 min

3

min

4th repeat attempt

End of sequence

 

 

 

 

(Note 1)

2 min

10 min

3

min

6th repeat attempt

 

 

2 min

10 min

3

min

 

 

 

End of sequence

 

 

7th repeat attempt

 

 

(Note 1)

10 min

3

min

nth repeat attempt

 

 

 

10 min

3

min

 

 

 

 

(note 2)

(note 2)

Note 1: The maximum number of calls for repeat attempt call pattern A is 5 and for call pattern B is 7.

Note 2: No limit is specified for n.

Note 3: The duration given in table 3 are from cleardown to reseizure.

Extracts from BS6789:Section 3.1:1985 are reproduced with permission of BSL. Complete copies of the standard can be obtained by mail from BSI Sales.

Use as an Extension on an Approved PABX

Xircom cannot guarantee that this modem will operate correctly under all possible conditions when connected to compatible PABX equipment. Any cases of difficulty should be reported directly to Xircom.

This modem may not be connected to PABX systems which do not have a BT431A compatible socket connection.

Bell Noise

This apparatus does not incorporate circuitry to suppress bell-tinkle during dialing. It has been found that when used with some electronic ring type telephones and on two wire circuits that bell tinkle will occur during dialing. This is not a fault and we advise you not to call the Fault repair service.

C-15

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Compaq 6500 Family manual Use as an Extension on an Approved Pabx, Bell Noise