Roaming Signalling Messages

2.10 Roaming Signalling Messages

The following types of Roaming Signalling Messages are included in the MUP and are each identified by a different heading code H1:

2.10.1 Roaming Number Enquiry Message (RNE)

2.10.2 Roaming Number Message (RNM)

2.10.3 Roaming Number Rejected Message (RNR)

2.10.4 Conditional Call Transfer Enquiry Message (CTE)

2.10.5 Conditional Call Transfer Accepted Message (CTA)

2.10.6 Conditional Call Transfer Rejected Message (CTR)

2.10.7 Routing Enquiry Message (REM)

2.10.8 Routing Information Message (RIM)

2.10.9 Routing Information Reject Message (RIR)

2.10.10 Business Group Number Enquiry Message (BNE)

2.10.11 Business Group Number Information Message (BNM)

2.10.12 Business Group Number Rejected Message (BNR)

2.10.13 Routing Enquiry Message 2 (REM2)

2.10.14 IN Routing Information Message (IRI)

2.10.15 Gateway Enquiry Initial Message (GEI

2.10.16 Gateway Routing Message (GRM)

2.10.17 Gateway Subsequent Enquiry Message (GSE)

2.10.18 Gateway Enquiry Terminate Message (GET)

2.10.19 HLR Routing Enquiry Message (HRE)

2.10.20 HLR Routing Message (HRM)

2.10.21 HLR Routing Rejected Message (HRR)

2.10.22 Serving Exchange Message (SEM)

2.10.23 Serving Exchange Acknowledgement Message (SEA)

2.10.1 Roaming Number Enquiry Message (RNE)

Basic format:

g	f	e	d	c	b	a
......BA	D.....BA	L.....BA	H..........BA	D.....BA	D.....BA	fe.........BA
MOBILE STATION IDENTITY	NUMBER OF DIGITS	MTXH IDENTITY	CALL ORIGIN INFORMATION	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
n * 8	4	12	8	4	4	32
4£ n £ 5

Figure 2.10.1 Roaming Number Enquiry Message.

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 0001.

d) Call origin information

See paragraph 2.7.2.d

Bit F: Spare.

Bit G: Check of the location of MS

0 Ordinary RNE message

1 Make only paging check of the MS

Bit H: IN-call indication

0 Normal mobile call

1 Call routed via IN

e) MTXH Identity

See paragraph 2.4.1.e.

f) Number of digits

See paragraph 2.4.1.f.

g) Mobile Station Identity

See paragraph 2.4.1.g.

2.10.2 Roaming Number Message (RNM)

Basic format:

f	e	d	c	b	a
........BA	D.....BA	D.......BA	D.....BA	D.....BA	fe.........BA
MOBILE STATION ROAMING NUMBER	NUMBER OF DIGITS	ADDRESS INDICATORS	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
n * 8	4	4	4	4	32
4£ n £ 8

Figure 2.10.2 Roaming Number Message

The following codes are used in the fields of the Roaming Number Message:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 0010.

d) Address Indicators

The coding of these indicators have the following meaning:

Bit A: 0 The MSRN is a national significant number.

1 The MSRN is an international number.

Bit DCB: Spare

e) Number of digits.

See paragraph 2.4.1.f.

f) Mobile Station Roaming Number.

Coding of these digits as in paragraph 2.5.2.f.

2.10.3 Roaming Number Rejected Message (RNR)

Basic format:

d	c	b	a
H.......BA	D.....BA	D.....BA	fe.........BA
REASON	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
8	4	4	32

Figure 2.10.3 Roaming Number Rejected Message.

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 0011.

d) Reason:

Bit DCBA:

	0000	No free MSRN
	0001	MS Identity unknown
	0010	Spare
	0011	Spare
	0100	Not used
	0101	Not used
	0110	Not used
	0111	Miscellaneous
	1000	Spare
	:	:
	1101	Spare
	1110	MS does not acknowledge to paging
	1111	Spare

Bit HGFE:

Spare.

2.10.4 Conditional Call Transfer Enquire Message (CTE)

Basic format:

e	d		c	b	a
D.....BA	D.......BA		D.....BA	D.....BA	fe.........BA
TYPE OF CALL TRANSFER SERVICE	NEXT C-NUMBER TO BE FETCHED		HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
4	4		4	4	32
h		g	f
........BA		D.....BA	L.......BA
MOBILE STATION IDENTITY		NUMBER OF DIGITS	MTXV IDENTITY
n * 8		4	12
4£ n £ 5

Figure 2.10.4 Conditional Call Transfer Enquire Message

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 0100.

d) Next C-number

This field indicates the position of the wanted C-number in the list of C-numbers. When this message is sent the first time this field is always coded 0001.

Bit DCBA:

	0000	Not used
	0001	1st C-number in the list or an arbitrary C-number
	0010	2nd C-number in the list
	:	:
	1111	15th C-number in the list

e) Type of Call Transfer service

Bit DCBA

	0000	Conditional Call Transfer on no page response or Personal Number service
	0001	Conditional Call Transfer on no answer
	0010	Conditional Call Transfer on busy
	0011	Conditional Call Transfer on BS congestion
	0100	Spare
	:	:
	1111	Spare

f) MTXV Identity.

See paragraph 2.4.1.e.

g) Number of digits.

See paragraph 2.4.1.f.

h) Mobile Station Identity.

See paragraph 2.4.1.g.

2.10.5 Conditional Call Transfer Accepted Message (CTA)

Basic format:

e		d		c	b	a
D.......BA		D.......BA		D.....BA	D.....BA	fe.........BA
ADDRESS INDICATORS		POSITION IN LIST OF C-NUMBERS		HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
4		4		4	4	32
h	g		f
......BA	D.....BA		D.......BA
C-NUMBER	NUMBER OF DIGITS		DURATION OF ALERTING
n * 8	4		4
2£ n £ 8

Figure 2.10.5 Conditional Call Transfer Accepted Message

The following codes are used:

a) Transaction number

See paragraph 2.2.

b) Heading code H0 coded 1001.

c) Heading code H1 is coded 0101.

d) Position in list of C-numbers

This field indicates the position of the given C-number in the list of C-numbers, or it indicates if an arbitrary number is in use.

Bit DCBA:

	0000	The C-number is the last number in the list. This code is also used if no list of C-numbers is in use, but an arbitrary number is transferred.
	0001	1st C-number in the list
	0010	2nd C-number in the list
	:	:
	1111	15th C-number in the list

e) Address Indicators

The coding of these indicators have the following meaning:

Bit A: 0 The C-number is a national significant number.

1 The C-number is an international number.

Bit DCB:

Spare

f) Duration of alerting at Call transfer on no reply

Bit DCBA:

	Seconds		Seconds
0000	Def.val.	1000	40
0001	5	1001	45
0010	10	1010	50
0011	15	1011	55
0100	20	1100	60
0101	25	1101	65
0110	30	1110	70
0111	35	1111	75

g) Number of digits.

See paragraph 2.4.1.f.

h) C-number.

Coding of these digits as in paragraph 2.5.2.f.

2.10.6 Conditional Call Transfer Rejected Message (CTR)

Basic format:

d	c	b	a
H.......BA	D.....BA	D.....BA	fe.........BA
REASON	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
8	4	4	32

Figure 2.10.6 Conditional Call Transfer Rejected Message

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 0110.

d) Reason

Bit DCBA:

	0000	The subscriber has not activated the requested Call Transfer service
	0001	The list of C-numbers is not activated
	0010	No C-number is found
	0011	C-number not possible to convert to an international number
	0100	Miscellaneous
	0101	Spare
	:	:
	1111	Spare

Bit HGFE:

Spare.

2.10.7 Routing Enquiry Message (REM)

Basic format:

f	e	d	c	b	a
........BA	D.....BA	D.......BA	D.....BA	D.....BA	fe.........BA
MOBILE STATION DIRECTORY NUMBER	NUMBER OF DIGITS	MTXG IDENTITY	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
n * 8	4	12	4	4	32
2£ n £ 8

Figure 2.10.7 Routing Enquiry Message.

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 0111.

d) MTXG Identity.

See paragraph 2.4.1.e.

e) Number of digits.

See paragraph 2.4.1.f.

f) Mobile Station Directory Number.

Coding of these digits as in paragraph 2.5.2.f.

2.10.8 Routing Information Message (RIM)

Basic format:

f	e	d	c	b	a
......BA	D.....BA	D.......BA	D.....BA	D.....BA	fe.........BA
MS ROAMING NUMBER	NUMBER OF DIGITS	ADDRESS INDICATORS	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
n * 8	4	4	4	4	32
2£ n £ 8

Figure 2.10.8 Routing Information Message.

The following codes are used:

a) Transaction number

See paragraph 2.2.

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 1000.

d) Address Indicators

The coding of these indicators have the following meaning:

Bit A: 0 The MSRN is a national significant number.

1 The MSRN is an international number.

If no MSRN is transferred, this bit should be coded «0».

Bit B: 0 MSRN is not included

1 MSRN is included

If the "MSRN is not included" is set, the call shall be routed using the dialled MS directory number.

If the "MSRN is included" is set, the call shall be routed using the Mobile Station Roaming Number transferred in the message.

Bit C: 0 The MSRN is a "Roaming" number

1 The MSRN is a "Homing" number i.e. it belongs to MTXH

Bit D: Spare

e) Number of digits.

See paragraph 2.4.1.f.

f) Mobile Station Roaming Number (MSRN).

Coding of these digits as in paragraph 2.5.2.f.

2.10.9 Routing Information Rejected Message (RIR)

Basic format:

d	c	b	a
H.....BA	D.....BA	D.....BA	fe.........BA
REASON	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
8	4	4	32

Figure 2.10.9 Routing Information Rejected Message.

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 1001.

d) Reason:

Bit DCBA:

	0000	No free MSRN
	0001	MS Identity unknown
	0010	Spare
	0011	Spare
	0100	Mobile Station Directory Number incomplete
	0101	Unallocated directory number
	0110	Access Barred (reserved for future use).
	0111	Miscellaneous
	1000	National option: Routing via IN required (IN data included in bit HGFE)
	1001	Spare
	:	:
	1111	Spare

Bit HGFE:

National option:

Additional information connected to code 1000 in bit DCBA.

2.10.10 Business Group Number Enquiry Message (BNE)

Basic format:

f	e	d	c	b	a
......BA	D.....BA	D.......BA	D.....BA	D.....BA	fe.........BA
MOBILE STATION IDENTITY	NUMBER OF DIGITS	MTXV IDENTITY	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
n * 8	4	12	4	4	32
4£ n£ 5
i	h	g
......BA	D.....BA	D.....BA
DIALLED DIGITS	NUMBER OF DIGITS	SPARE
n * 8	4	4
2£ n £ 8

Figure 2.10.10 Business Group Number Enquiry Message

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 1010.

d) MTXV Identity.

See paragraph 2.4.1.e.

e) Number of digits.

See paragraph 2.4.1.f.

f) Mobile Station Identity.

See paragraph 2.4.1.g.

g) Spare.

h) Number of digits.

See paragraph 2.4.1.f.

i) Dialled digits.

Coding of these digits as in paragraph 2.5.2.f.

2.10.11 Business Group Number Information Message (BNM)

Basic format:

f	e	d	c	b	a
........BA	D.....BA	D.......BA	D.....BA	D.....BA	fe.........BA
CALLED SUBSCRIBER NUMBER	NUMBER OF DIGITS	ADDRESS INDICATORS	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
n * 8	4	4	4	4	32
0£ n £ 8

Figure 2.10.11 Business Group Number Information Message.

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 1011.

d) Address Indicators.

The coding of these indicators have the following meaning:

Bit A: 0 Called subscriber number is a national significant number

1 Called subscriber number is an international number.

Bit DCB:

Spare

e) Number of digits.

See paragraph 2.4.1.f.
Number of digits is coded zero when the called subscriber number is equal to the dialled digits(See BNE, field i). In that case the ‘called subscriber number’ is not included in BNM.

f) Called subscriber number.

The coding of these digits as in paragraph 2.5.2.f.

2.10.12 Business Group Number Rejected Message (BNR)

Basic format:

d	c	b	a
D.....BA	D.....BA	D.....BA	fe.........BA
REASON	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
8	4	4	32

Figure 2.10.12 Business Group Number Rejected Message.

The following codes are used:

a) Transaction number.

See paragraph 2.2.

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 1100.

d) Reason:

Bit DCBA:

	0000	MS Identity unknown
	0001	No business group found for MS Identity
	0010	Dialled short code not defined in HLR/MTXH.
	0011	Subscribed not allowed to make short number calls in the MTXV
	0100	Miscellaneous
	0101	Spare
	:	:
	1111	Spare

Bit HGFE:

Spare

2.10.13 Routing Enquiry Message 2 (REM2)

Basic format:

f	e	d	c	b	a
........BA	D.....BA	L.....BA	D.....BA	D.....BA	fe.........BA
MOBILE STATION DIRECTORY NUMBER	NUMBER OF DIGITS	MTXG IDENTITY	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
n * 8	4	12	4	4	32
2£ n £ 8
h	g
D.......BA	D.......BA
SPARE	ROUTING INDICATORS
4	4

Figure 2.10.13 Routing Enquiry Message 2

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1001.

c) Heading code H1 is coded 1101.

d) MTXG Identity.

See paragraph 2.4.1.e.

e) Number of digits.

See paragraph 2.4.1.f.

f) Mobile Station Directory Number.

Coding of these digits as in paragraph 2.5.2.f.

g) Routing indicators

Bit A: Terminating IN-category suppression

0 No suppression

1 Suppress terminating IN category

Bit DCB: Spare

h) Spare

2.10.14 IN-Routing Information Message (IRI)

Basic format:

e	d	c	b	a
P.....BA	P.....BA	D.....BA	D.....BA	fe.........BA
B- LOCATION	IN-POINTER	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
16	16	4	4	32

Figure 2.10.14 IN-Routing Information Message

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0

H0 is coded 1001.

c) Heading code H1 is coded 1110.

d) IN-Pointer

Bit P...EDCBA:

Coding is a national option

e) B-location

Bit P...EDCBA:

Coding is a national option

2.10.15 Gateway Enquiry Initial Message (GEI)

Basic format:

f		e	d		c	b		a
........BA		D.....BA	L....BA		D.....BA	D.....BA		fe.........BA
MOBILE STATION DIRECTORY NUMBER		NUMBER OF DIGITS	MTXG IDENTITY		HEADING CODE H1	HEADING CODE H0		TRANSACTION NUMBER
n * 8		4	12		4	4		32
0£ n £ 8
l	k			j	i		h		g
D.....BA	D.......BA			D....BA	D..........BA		H.....BA		P.......BA
SPARE	REDIRECTING NUMBER			NUMBER OF DIGITS	CALL ORIGIN INFORMATION		CALLING PARTY CATEGORY		MTXG LOCAL CALL REFERENCE
4	n * 8			4	4		8		24
	0£ n £ 8
n		m
........BA		D.....BA
ORIGINAL CALLING PARTY DIR. NO		NUMBER OF DIGITS
n * 8		4
0£ n £ 8

Figure 2.10.15 Gateway Enquiry Initial Message

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1010

c) Heading code H1 is coded 0001.

d) MTXG Identity.

See paragraph 2.4.1.e.

e) Number of digits.

See paragraph 2.4.1.f.

f) Mobile Station Directory Number.

The number is a National Significant Number. Coding of these digits as in paragraph 2.5.2.f.

g) MTXG Local Call Reference

The local call reference is a 24-bit binary coded number that is sent to the HLR/MTXH to uniquely point out an outgoing call set-up in the MTXG. The MTXG local call reference is sent further on to the MTXV as a global call reference. The global call reference consists of the MTXG Identity followed by the MTXG local call reference. An MTXG local call reference might be reused when the call is terminated.

h) Calling Party Category

Coded according to CCITT blue book, volume VI, facile VI,8, Req Q.763.

i) Call origin information

Bit DCBA:

	0000	Unknown origin
	0001	Origin is Intelligent Network
	0010	Origin is Message Center
	0011	Spare
	:	:
	1111	Spare

j) Number of digits

See paragraph 2.4.1.f.

k) Redirecting number

Coding of these digits as in paragraph 2.5.2.f.

l) Spare

m) Number of digits

See paragraph 2.4.1.f.

n) Original calling party directory number

Coding of these digits as in paragraph 2.5.2.f.

2.10.16 Gateway Routing Message (GRM)

Basic format:

f	e		d		c	b	a
......BA	E.....BA		CBA		D.....BA	D.....BA	fe.........BA
ROUTING NUMBER	NUMBER OF DIGITS		ROUTING NUMBER INFORMATION		HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
n * 8	5		3		4	4	32
0£ n<16
k	j		i		h	g
......BA	D.....BA		D..........BA		H.....BA	fe.........BA
MOBILE STATION IDENTITY	NUMBER OF DIGITS		NOT REACHABLE ANNOUNCEMENT INDICATORS		CALLING PARTY CATEGORY	TRANSACTION REFERENCE
n * 8	4		4		8	32
4£ n £ 5
o		n		m		l
H..........BA		fe.........BA		X..........BA		P.......BA
INFORMATION FIELD FOR SUBSCRIPTION STATUS		SUPPLEMENTARY CALL INFORMATION FOR FORWARDED CALLS		GENERAL SUPPLEMENTARY CALL INFORMATION		CALL EVENT REPORT INDICATORS
0/8 Optional		32		24		16

Figure 2.10.16 Gateway Routing Message

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1010.

c) Heading code H1 is coded 0010.

d) Routing number information

The coding of these indicators have the following meaning:

Bit A: 0 The included number is a national significant number.

1 The included number is an international number.

Bit CB:

	00	MSRN is included
	01	Diversion number is included
	10	Other routing number
	11	The MSRN is a homing number

When there is no routing number included in the message (field e is set to zero), routing number information is not valid and is coded 000.

e) Number of digits.

See paragraph 2.4.1.f.

f) Routing Number

Coding of these digits as in paragraph 2.5.2.f.

g) Transaction reference

This is a binary number used to link the two messages Gateway Routing Message (GRM) and Gateway Subsequent Enquiry Message (GSE) which is considered one transaction. A transaction reference can be reused when the transaction has been successfully completed.

h) Calling Party Category

Coded according to CCITT blue book, volume VI, facile VI,8, Req Q.763.

i) Not reachable announcement indicators

Provide announcement means that if the conditions for one of the following events are fulfilled, an appropriate announcement will be played in the MTXG.

Coding:

0 Do not provide announcement

1 Provide announcement

Bit A: No answer

Bit B: No page response

Bit C: Busy

Bit D: Base station congestion

j) Number of digits.

See paragraph 2.4.1.f.

k) Mobile Station Identity.

See paragraph 2.4.1.g.

l) Call event report indicators

When the MTXG detects an event that the HLR/MTXH has marked in the "Call event report indicators" a Gateway Subsequent Enquiry Message is sent to the HLR/MTXH where further action is decided.

Coding:

0 Event not to be reported

1 Event to be reported

Bit A: No answer

Bit B: No page response

Bit C: Busy

Bit D: Base station congestion

Bit E: Spare

Bit F: B-answer

Bit G: A-termination

Bit H: B-termination

Bit PONMLKJI:

Spare

m) General supplementary call information

Bit DCBA:

Duration of alerting:

	Seconds		Seconds
0000	Def. val.	1000	40
0001	5	1001	45
0010	10	1010	50
0011	15	1011	55
0100	20	1100	60
0101	25	1101	65
0110	30	1110	70
0111	35	1111	75

Bit HGFE:

Information for charge determination

	0000	No charging
	0001	Charge determination code no. 1
	:	:
	1111	Charge determination code no. 15

Coding of the following bits:

0 Service not activated

1 Service activated

Bit I: Immediate billing output

Bit J: Malicious call tracing indicator

Bit K: Calling line identification restriction

Bit ML: Type of call forwarding

Included when routing number information is marked

’diversion number included’.

00 Unknown

01 Personal number (Universal number)

10 Voice mail box

11 Spare

Bit QPON:

Spare

Bit TSR: Call forwarding Information

Included when routing number information is marked

’diversion number included’.

000 Unknown

001 Unconditional call forwarding

010 Call forwarding on busy

011 Call forwarding on base station congestion

100 Call forwarding on no page response

101 Call forwarding on no answer

110 - 111 Spare

Bit XWVU:

Spare

n) Supplementary call information for forwarded calls

Bit FEDCBA:

Call forwarding announcement codes

	000000	No announcement
	000001	Announcement code no.1
	:	:
	111111	Announcement code no. 63

Bit HG: Start of announcement

	00	Provide announcement before the forwarding is initiated
	01	Provide announcement and initiate the forwarding simultaneously.
	10	Provide announcement during the alerting.
	11	Spare

Bit LKJI:

Diverted call barred indicator

Coding as for outgoing call barred indicator in paragraph 2.5.1.f.

This codes are used by the MTXG to determine whether the call should be barred or not.

Bit cbaZXWVUTSRQPONM:

Information Field for IN-Services

See paragraph 2.5.1.k for explanation and coding.

Bit dfe: Spare

o) Information Field for Subscription status

This field is optional (In case the GRM message is extended in a future edition of the spec, the validity of this field will be optional).

Se paragraph 2.5.1.l for explanation and coding.

2.10.17 Gateway Subsequent Enquiry Message (GSE)

Basic format:

f	e	d	c	b	a
D.....BA	P.....BA	fe.........BA	D.....BA	D.....BA	fe.........BA
SPARE	CALL EVENT REPORTED	TRANSACTION REFERENCE	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
4	16	32	4	4	32
h	g
......BA	D.....BA
LOCATION NUMBER	NUMBER OF DIGITS
n*8 0<n<8	4

Figure 2.10.17 Gateway Subsequent Enquiry Message

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1010

c) Heading code H1 is coded 0011

d) Transaction reference

See paragraph 2.10.16.g

e) Call event report indicators

See paragraph 2.10.16.l

f) Spare

g) Number of digits

See paragraph 2.4.1.f.

h) Location number

Coded as in paragraph 2.4.1.g

2.10.18 Gateway Enquiry Terminate Message (GET)

Basic format:

f		e		d		c	b	a
CBA		H..........BA		H..........BA		D.....BA	D.....BA	fe.........BA
ROUTING NUMBER INFORMATION		ADDITIONAL INFORMATION		REASON FOR TERMINATION		HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
3		8		8		4	4	32
k	j		i		h	g
......BA	D.....BA		D..........BA		........	E.......BA
MOBILE STATION IDENTITY	NUMBER OF DIGITS		INFORMATION FOR CHARGE DETERMINATION		ROUTING NUMBER	NUMBER OF DIGITS
n * 8	4		4		n * 8	5
4£ n £ 5					0£ n<16

Figure 2.10.18 Gateway Enquiry Terminate Message

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1010.

c) Heading code H1 is coded 0100

d) Reason for termination

Bit DCBA:

0000	Termination of procedure	1000	Subscriber controlled absent subscriber service
0001	Rejected by Technical reason	1001	Message Waiting Service
0010	Unpermitted traffic case	1010	Changed number announcement
0011	Barring for Terminating traffic	1011	Spare
0100	Do not disturb service	1100	Spare
0101	Interception service	1101	Spare
0110	Call transfer protection	1110	Spare
0111	Absent subscriber service	1111	Spare

Bit HGFE: Spare

e) Additional information

The meaning of the codes are defined in Annex-1 of this document.

f) Routing number information

The coding of these indicators have the following meaning:

Bit A: 0 The included number is a national significant number.

1 The included number is an international number.

Bit CB:

	00	MSRN is included
	01	Not used
	10	Other routing number
	11	The MSRN is a homing number

Bit CBA is coded 000 when routing number is not included.

g) Number of digits.

See paragraph 2.4.1.f.

h) Routing Number

Coding of these digits as in paragraph 2.5.2.f.

i) Information for charge determination

Bit DCBA:

	0000	No charging
	0001	Charge determination code no. 1
	:	:
	1111	Charge determination code no.15

j) Number of digits.

See paragraph 2.4.1.f.

k) Mobile Station Identity.

See paragraph 2.4.1.g.

2.10.19 HLR Routing Enquiry Message (HRE)

Basic format:

f	e		d		c		b	a
........BA	D.....BA		L.......BA		D.....BA		D.....BA	fe.........BA
MOBILE STATION DIRECTORY NUMBER	NUMBER OF DIGITS		HLR/MTXH IDENTITY		HEADING CODE H1		HEADING CODE H0	TRANSACTION NUMBER
n * 8	4		12		4		4	32
4£ n £ 5
j		i		h		g
H..........BA		X.......BA		D..........BA		L.....BA
MESSAGE INFORMATION FIELD		MTXG LOCAL CALL REFERENCE		SPECIAL INFORMATION FIELD		MTXG IDENTITY
8 Optional		24		4		12

Figure 2.10.19 HLR Routing Enquiry Message

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1011

c) Heading code H1 is coded 0001.

d) HLR/MTXH Identity.

See paragraph 2.4.1.e.

e) Number of digits.

See paragraph 2.4.1.f.

f) Mobile Station Identity.

Coding of these digits as in paragraph 2.4.1.g

g) MTXG Identity.

See paragraph 2.4.1.e.

h) Special information field

Bit A: Check of the location of the MS

0 Ordinary HRE-Message

1 Make only Paging check of the MS

Bit CB: Routing Number Type

	00	Ordinary call
	01	Message delivery call
	10	Spare
	11	Spare

Bit D: Spare

i) MTXG Local Call Reference

See paragraph 2.10.15.g

j) Message Information Field

Coding of these indicators has the following meaning:

0 Service not activated

1 Service activated

Bit A: Short Message

Bit B: Voice Mail.

Bit C: Fax

Bit D: E-mail

Bit E: Data

Bit HGF: Spare

2.10.20 HLR Routing Message (HRM)

Basic format:

f	e	d	c	b	a
........BA	D.....BA	D.......BA	D.....BA	D.....BA	fe.........BA
ROUTING NUMBER	NUMBER OF DIGITS	ROUTING NUMBER INFORMATION	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
n * 8	4	4	4	4	32
0£ n £ 8

Figure 2.10.20 HLR Routing Message

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1011.

c) Heading code H1 is coded 0010.

d) Routing number information

The coding of these indicators have the following meaning:

Bit A: 0 The included number is a national significant number.

1 The included number is an international number.

Bit DCB: Spare

e) Number of digits.

See paragraph 2.4.1.f.

Note: Routing number is not returned in HRM at security paging and message waiting calls (see HRE).

f) Routing Number

The number is normally the "mobile station roaming number"

Coding of these digits as in paragraph 2.5.2.f.

2.10.21 HLR Routing Rejected Message (HRR)

Basic format:

d	c	b	a
H.......BA	D.....BA	D.....BA	fe.........BA
REASON	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
8	4	4	32

Figure 2.10.21 HLR Routing Rejected Message

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1011

c) Heading code H1 is coded 0011.

d) Reason

Bit DCBA:

0000	No free MSRN	1000	Spare
0001	MS Identity unknown	1001	Spare
0010	Spare	1010	Spare
0011	Spare	1011	Spare
0100	Spare	1100	Spare
0101	Spare	1101	Spare
0110	Spare	1110	No page response
0111	Miscellaneous	1111	The called subscriber is busy

Bit HGFE:

Spare

2.10.22 Serving Exchange Message (SEM)

Basic format:

f	e	d	c	b	a
D.....BA	P.....BA	X.......BA	D.....BA	D.....BA	fe.........BA
SPARE	CALL EVENT REPORTED	MTXG LOCAL CALL REFERENCE	HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
4	16	24	4	4	32
h	g
......BA	D.....BA
LOCATION NUMBER	NUMBER OF DIGITS
n * 8	4
0<n<8

Figure 2.10.22 Serving Exchange Message

The following codes are used:

a) Transaction number

See paragraph 2.2

b) Heading code H0 is coded 1010

c) Heading code H1 is coded 0101

d) MTXG Local Call Reference

See paragraph 2.10.15.g

e) Call event report indicators

One of the following events are reported to the MTXG from the MTXV:

Coding: 0 Event not detected

1 Event detected

Bit A: No answer

Bit B: No page response

Bit C: Busy

Bit D: Base station congestion

Bit E: Ringing started

Bit F: Not used

Bit G: Not used

Bit H: Not used

Bit PONMLKJI:

Spare

f) Spare

g) Number of digits.

See paragraph 2.4.1.f.

h) Location number

Coding of these digits as in paragraph 2.4.1.g

2.10.23 Serving Exchange Acknowledgement Message (SEA)

Basic format:

c	b	a
D.....BA	D.....BA	fe.........BA
HEADING CODE H1	HEADING CODE H0	TRANSACTION NUMBER
4	4	32

Figure 2.10.23 Serving Exchange Message

The following codes are used:

a) Transaction number.

See paragraph 2.2

b) Heading code H0 is coded 1010

c) Heading code H1 is coded 0110