31.10 MMI input for USSD
3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS
31.10.1 Conformance requirements
If the MS cannot interpret the MMI input as a defined GSM Supplementary Services, SIM control procedure or MS manufacturer-defined procedure, and if the MMI input is in the form:
– "entry of any characters defined in the 3GPP TS 03.38 Default Alphabet (up to the maximum defined in 3GPP TS 04.80) followed by #SEND"; or
– "entry of 1 or 2 characters defined in the 3GPP TS 03.38 Default Alphabet followed by SEND";
then it shall be interpreted by the MS as Unstructured SS Data and sent transparently towards the network, unless the MS is not engaged in a call and the first digit of the 2 character entry, followed by SEND, is a "1". In this case the MS shall transmit this as a call-setup request.
References
3GPP TS 02.30 subclause 4.5.3.
31.10.2 Test purpose
To check that the entry of 2 digits in the form 1X (X in the set 0,…9) followed by SEND is accepted by the mobile station in idle mode as a normal call establishment for the 1X number. It is checked that the MS sends a CHANNEL REQUEST, sends CM SERVICE REQUEST message for mobile originated call (after having received an IMMEDIATE ASSIGNMENT), and then sends the SETUP message containing the 1X phone number as called number (after having received the CM SERVICE ACCEPT message).
31.10.3 Method of test
Initial conditions
System Simulator:
1 cell, default parameters.
Mobile Station
The MS is "idle updated";
Specific PICS Statements
–
PIXIT Statements
–
Foreseen final state of the MS:
The MS is "idle updated.
Test procedure
The user requests call establishment successively for every 2 digit phone number of the 1X form (X in the set 0,…9) allowing ten seconds between each attempts.
Maximum duration of test
3 minutes.
Expected Sequence
The following sequence is executed for execution counter k = 1 to 10.
|
Step |
Direction |
Message |
Comments |
|
1 |
MS |
The MS is made to initiate call establishment for phone number 1X (where X = k‑1) |
|
|
2 |
MS -> SS |
CHANNEL REQUEST |
with establishment cause related to mobile originating call |
|
3 |
SS -> MS |
IMMEDIATE ASSIGNMENT |
|
|
4 |
MS -> SS |
CM SERVICE REQUEST |
"mobile originating call" |
|
5 |
SS -> MS |
CM SERVICE ACCEPT |
|
|
6 |
MS -> SS |
SETUP |
called BCD number is 1X |
|
7 |
SS -> MS |
RELEASE COMPLETE |
|
|
8 |
Wait for 10 seconds |
Specific message contents.
None.