Change time slot
WHY?
Test whether the mobile switches correctly to a different
time slot and the connection is maintained.
Requirement
The mobile is not in test mode.
Make the general test preparations. The channel type
must be To digital TC.
Initiate a call with
{MOBILE}
or
{CELL.}
(the mobile must be
in a digital traffic channel).
HOW?
Change the number in the SLOT field. Confirm your
entry with
[ENTER]
.
Note: the permissible slot number depends on the type
of speech codec in the mobile (see "General Test Pre-
parations").
Press
{EXECUTE}
in the basic test mask. In this way
signaling adopts the new time slot.
Test Results
D
Mobile could switch to new slot: connection does not break
off, basic test mask continues to show results in digital sector.
Mobile could not switch to new slot: connection breaks off.
Fig. 10.16: One digital traffic channel (DTC)
is divided into six time slots. In full-rate data
transmission time slots are used as pairs (1st
and 4th, 2nd and 5th, 3rd and 6th), with each
time slot carrying half of speech data. Full
rate means three users share one frequency
(DTC).
IS-136 MS Handoff Procedures
10-26
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