手机测试之"自动重拨"

(GSM 02.07 version7.1.0Release 1998)       9          ETSI TS 100 906 V7.1.0 (2000-04)

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Annex A (normative):

Automatic calling repeat call attempt restrictions

Call set up attempts referred to in this annex are assumed to be initiated from peripheral equipment or automatically from the MT itself.

A repeat call attempt may be made when a call attempt is unsuccessful for the reasons listed below (as defined in GSM 04.08 [12]).

These reasons are classified in three major categories:

1) "Busy destination":

Cause number 17    User busy.

2) "Unobtainable destination - temporary":

Cause number 18    No user responding;

19    User alerting, no answer;

27    Destination out of order;

34    No circuit/channel available;

41    Temporary failure;

42    Switching Equipment congestion;

44    Requested circuit/channel not available;

47    Resources unavailable, unspecified.

3) "Unobtainable destination - permanent/long term":

Cause number 1     Unassigned (unallocated) number;

3     No route to destination;

22    Number changed;

28    Invalid number format (uncompleted number);

38    Network out of order.

NOTE 1: Optionally, it is allowed to implement cause number27 inCategory 3, instead of Category 2, as this is desirable already in Phase 1.

The table below describes a repeat call restriction pattern to any B number. This pattern defines a maximum number (n) of call repeat attempts; when this number n is reached, the associated B number shall be blacklisted by the MT until a manual re-set at the MT is performed in respect of that B number. When a repeat attempt to anyone B number fails, or is blacklisted, this does not prevent calls being made to other B numbers.

For the categories 1 and 2 above, n shall be 10; for category 3, n shall be 1.

ETSI

 (GSM 02.07 version7.1.0Release 1998)        10       ETSI TS 100 906 V7.1.0 (2000-04)

call attempts                            

Initial call attempt                                

1st repeat attempt                               

2nd repeat attempt                             

3rd repeat attempt                              

4th repeat attempt                            

5th repeat attempt                          

..

nth repeat attempt

Minimum duration between Callattempt

-

5 sec

1 min

1 min

1 min

3 min

           ...

3 min