2.6 Location Data Backward Messages

The following types of Location Data Backward Messages are included in the mobile user part and are each identified by a different heading code H1:

2.6.1 Location Updating Accepted Message (LUA)

2.6.2 Location Updating Rejected Message (LUR)

2.6.3 Location Cancellation Accepted Message (LCA)

2.6.4 Supplementary Updating Acknowledge message (SUA)

2.6.1 Location Updating Accepted Message (LUA)

Basic format:

f

e

d

c

b

a

HG......BA

P.......BA

HG.........BA

D.....BA

D.....BA

fe.........BA

SUBSCRIPTION REGION CODE

MOBILE STATION CATEGORIES SET NO 1

ADDITIONAL INFORMATION INDICATORS

HEADING CODE H1

HEADING CODE H0

TRANSACTION NUMBER

8

16

8

4

4

32

k

j

i

h

g

HG.......BA

H............BA

D..........BA

D..........BA

fe.........BA

ADDRESS INDICATORS/ NUMBER OF DIGITS

INFORMATION FIELD FOR BUSINESS GROUP SUBSCRIBERS

INFORMATION FIELD INDICATOR SET NO 2

INFORMATION FIELD INDICATOR SET NO 11

SUPPLEMENTARY SERVICE ACTIVATION INDICATION

0/8

0/8

    

32

Optional

Optional

0/8

Optional

  

q

p

o

n

m

l

P.......BA

P............BA

P.......BA

H.........BA

P.........BA

.......BA

MESSAGE WAITING INDICATORS

SUPPLEMENTARY SERVICES/ MOBILE STATION CATEGORIES SET NO 2

PREPAID CALL UNITS

INFORMATION FIELD FOR SUBSCRIPTION STATUS

INFORMATION FIELD FOR IN-SERVICES

MS DIRECTORY NUMBER

0/8

0/8

0/16

0/8

0/16

n*8

Optional

Optional

Optional

Optional

Optional

0£ n£ 8
Optional

Figure 2.6.1 Location Updating Accepted Message (LUA).

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 0011.

c) Heading code H1 is coded 0001.

d) Additional Information Indicators.

Coding of this indicators have the following meaning:

Bit HGFEDCBA:

Spare.

e) Mobile station categories set no 1.

Coding of this information as in paragraph 2.5.1.d.

f) Subscription Region Code.

Coding of this information as in paragraph 2.5.1.e.

g) Supplementary services activation indicators.

Coding as in paragraph 2.5.1.f.

h) Information Field Indicator Set no 1

0 Field not included

1 Field included

Bit A: Business Group Subscriber.

Bit B: Information field for transfer of the MS directory number:

Address Indicators, Number of digits and MS directory number.

Bit C: IN-Services.

Bit D: Subscription Status.

i) Information Field Indicator Set no 2

0 Field not included

1 Field included

Bit A: Reserved for Information Field Indicator Sets no 3.

Bit B: Prepaid Call Units

Bit C: Supplementary Services/ Mobile station Categories Set no 2.

Bit D: Message Waiting Indicators

j) Information Field for Business Group Subscriber.

This is an optional field. Coding as in paragraph 2.5.1.j.

k) Address Indicators/ Number of digits

This is an optional field. The coding of these indicators have the following meaning:

Bit A: Address indicator

0 The MS Directory Number is a national significant number.

1 The MS Directory Number is an international number.

Bit B: Spare

Bit C: Calling Number Identification Restriction (CLIR)

0 No restriction.

1 Restriction.

Bit D: Spare.

Bit HGFE:

Number of digits.

A code expressing in pure binary representation the number of digits contained in the following subfield.

l) Mobile Subscriber Directory Number.

This is an optional field containing the Mobile Subscriber Directory Number (E.164 number). See paragraph 2.5.2.f for explanation and coding.

m) Information Field for IN-Services

This is an optional field. See paragraph 2.5.1.k for explanation and coding.

n) Information Field for Subscription status

This is an optional field. Se paragraph 2.5.1.l for

explanation and coding.

 

o) Prepaid Call Units

This is an optional field. The field indicates the amount of the remaining «Prepaid Call Units». Coding as in paragraph 2.4.1.g. The value of the «Prepaid Call Units» is operator specified.

p) Supplementary Services/ Mobile Station Categories set no. 2

This is an optional field. See paragraph 2.5.1.o for explanation and coding.

q) Message Waiting Indicators

This is an optional field. Coding as in paragraph 2.5.1.p.

2.6.2 Location Updating Rejected Message (LUR)

Basic format:

d

c

b

a

H..........BA

D.....BA

D.....BA

fe.........BA

REASON FOR REJECTION

HEADING CODE H1

HEADING CODE H0

TRANSACTION NUMBER

8

4

4

32

Figure 2.6.2 Location Updating Rejected Message

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 0011.

c) Heading code H1 is coded 0010.

d) Reason for rejection

Bit DCBA:

 

0000

Mobile station not allowed to roam
 

0001

Non existing mobile subscriber
 

0010

Incorrect security code (K1K2K3)
 

0011

Mobile station not equipped with Added Identity Security
 

0100

Miscellaneous
 

:

Spare
 

:

:
 

1111

Spare

 

Bit HGFE:

Spare.

 

2.6.3 Location Cancellation Accepted Message (LCA)

Basic format:

c

b

a

D.....BA

D.....BA

fe.........BA

HEADING CODE H1

HEADING CODE H0

TRANSACTION NUMBER

4

4

32

Figure 2.6.3 Location Cancellation Accepted Message

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 0011.

c) Heading code H1

H1 is coded 0011.

2.6.4 Supplementary Updating Acknowledge Message (SUA)

Basic format:

c

b

a

D.....BA

D.....BA

fe.........BA

HEADING CODE H1

HEADING CODE H0

TRANSACTION NUMBER

4

4

32

Figure 2.6.4 Supplementary Updating Acknowledge Message

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 0011.

c) Heading code H1 is coded 0100.