Ricoh ISDN Protocol Handbook

ISDN

Protocol Handbook

Revised on September 20th, 1995

I. Layer 1

Note: Phantom power (40V). Ping-pong transmission may be

different, depending on the network company.

LAYER 1 CONFIGURATION DIAGRAM

Ω

100

Ω

→ → → → → → → → → →

S/T

TB RA

DSU

40V

7 km max.

→ → → → → →

-pong transmission

or echo cancellin

NTT

D70

→ → → → → →

I - 1

[Durin

standby]

+55V

(L1)

(L2)

communication]

[Durin

(L2)

U→NU

→

DSU→TE

0(+) 1

0(-)

→

DSU

TE1 T A

Existing

terminal TE2

V/X series

48bit (250µs, 192kbps)

DL. B1B1B1B1B1B1B1B1 E D A FAN B2B2B2B2B2B2B2B2 E D M B1B1B1B1B1B1B1B1 E D S B2B2B2B2B2B2B2B2 E D L. F L.FL.

2-bit offset

D B1B1B1 B1B1 B1B1 B1 L. D L. FA L. B2 B2B2 B2B2B2 B2B2 L. D L. B1B1 B1B1 B1B1 B1B1 L. D L. B2B2 B2B2 B2B2 B2B2 L. D L. F L.FL.L.

1.5V p-p

-30V

(L1)

2.5ms

320kbps

D S U

(

)

DSU CONNECTION

JAPAN

TA RA RB

MJ - 8S MJ - 8SR

L1 L2

TB RB

87654321

To subscriber line

TA RA

Bus wiring

TA RA RB TB

87654321

100

Ω

ISDN terminal

TE1

I - 2

TE1

ISDN terminal

Example of pseudo-ternary signalling (AMI Code)

000 00011111111

-0

Time

I - 3

Layer 1 Status

The ITU-T I.430 recommendation (the basic user-network inter face - Layer 1 specification) specifies layer 1 activation/deactivation procedures.

Before understanding the procedures, the status and INFO signals should be noted.

TE (Terminal Equipment) Status

Status Description

F1 TE is turned off. F2 TE is turned on, but no signal is exchanged. F3 TE is stopped. No signal is exchanged between TE and NT. F4 TE is waiting for the response to the INFO1 signal from NT. F5 TE is checking if the signal from the NT is INFO2 or INFO4. F6 TE is waiting for signals from NT after receiving the INFO2 signal. F7 TE and NT are synchronized. F8 TE has failed to synchronize with NT, and is waiting for the stop request from NT

NT (Network Termination) Status

Status Description

G1 NT has stopped. G2 NT is sending INFO2. G3 TE and NT are synchronized. G4 NT is terminating itself.

INFO Signals

NT to TE Direction TE to NT Direction

INFO0 No signal INFO0 No signal INFO2 INFO4 Synchronized frame INFO3 Synchronized frame

Activation signal in synchronized condition

INFO1

Activation signal in nonsynchronized condition

Activation Procedure from the TE

In idle “F3” status , the TE sends the INFO1 signal to the NT and changes to “F4” status. The NT then changes to “G2” status and sends the INFO2 signal to the TE. The TE changes to “F5” status and stops sending signals to synchronize itself to the signal from the NT. After the TE has synchronized to the signal, it sends the INF O3 signal to the NT and changes to the “F6” status. The NT then changes to “G3” status and sends the INFO4 si gnal back to the TE to inform that a physic al lin k ha s be en est ablished. The timers T1, T2 and T3 are used to reset the TE or NT if a correct response has not been received before the timers expire.

F5 F6

INFO1 INFO2

INFO0 INFO3

INFO4

INFO0 INFO0

INFO0

h143x510.wmf

Activation Procedure from the NT

The procedure starts from the NT by sending the INFO2 signal to the TE. After the TE has synchronized to the signal, it sends the INF O3 signal to the NT and changes to the “F6” status. The NT then changes to “G3” status and sends the INFO4 si gnal back to the TE to inform that a physic al lin k ha s be en est ablished. The timers T1 and T2 are used to reset the NT if a correct response ha s no t be en received before the ti me rs ex pi re.

Termination Procedure from the NT

The terminatio n pro ce du r e st art s fro m sy nchronized status (“F7” status for the TE and “G3” status for the NT). To terminate the physical connection, the NT just stops sending signals and ch an ge s to “G1” status. (The INFO0 signal means no signal is sent from the NT.) Then, the TE also stops sending signals and changes to “F3” status.

INFO2 INFO3

INFO4

INFO0 INFO0

INFO0

h143x511.wmf

INFO0 INFO0

F7 G3

h143x512.wmf

I - 5

II. D Channel, Layer 2

L A Y E R

100

Configuration of Dch layers 1 to 3

Ω

TE1 T A

→ → → → → → → → → →

DSU

TB RA

40V

→ → → → → → → → → →

→ → → → → →

-pong transmission

or echo cancellin

NTT D70

→ → → → → →

L A Y E R

DL. B1 B1 B1 B1 B1 B1 B1 B1 E D A FA N B2 B2 B2 B2 B2 B2 B2 B2 E D M B1 B1 B1 B1 B1 B1 B1 B1 E D S B2 B2 B2 B2 B2 B2 B2 B2 E DFL.

0(+)

0(-)

FLAG A C I FCS FLAG

0111111 0000000000 000000 0000000000 000000 0000000000 000000 00000000000000000 00000000000000 00 000000000000000000000000000000 0000000000000000000000000000000 000000000000 000 00 1111110···

Protocol ID

00010000

Call ref length

10000000

Call referance

XXXXXXXX

Mesage type Info element length

XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXX XXXXXXX

Information element D

Info element contents

···

··

D channel, layer 2-1 (Q.921:I.441:LAPD)

1 oct

2 oct

87654321

1 or 2 oct

N oct

SAPI

(Note 3)

TEI

(Note 4)

Note 1. Meaning of the EA bit (Address field extension bit)

EA value Meaning

0 Address field extension 1 Address field end

Note 2. Meaning of the C/R bit (Command/Response field bit)

C/R value Definition

→

N command

→

U response

→

U command

→

N response

C/R

(Note 2)

C R

R C

FCS

2 oct

(Note 1)

NetUser

1 oct

Note 3. SAPI value assignment (Service Access Point Identifier)

SAPI value Related entity

0 Call control procedure 1

16 Packet communication procedure (X.25 level 3) 63 Layer 2 management procedure

Other Reserved for future use

Reserved for packet communication using Q.931 call control procedure

Note 4. TEI value assignment (Terminal endpoint Idenifier)

TEI value User terminal type

0 ~63 Non-automatic TEI setting user terminal

64~126 Automatic TEI setting user terminal

127 B roadcasting format data link connection TEI

II - 2

D channel, layer 2-2 (Q.921:I.441:LAPD)

1 oct

Format Command Response

Information

transfer

(I)

Supervisory

Unnumbered

2 oct

(I)

(Information)

(Receive ready)RR(Receive ready)

RNR

(Receive not

ready)

REJ

(Re-transfer

request)

SABME

(Set

asynchronous

balanced mode

extended)

(Unnumbered

system

information)

DISC

(Disconnect)

1 or 2 oct

(Receive not

(Re-transfer

request)

(Disconnect

(Unnumbered

system

acknowledgement)

RNR

ready)

REJ

mode)

N oct

Coding

87654321oct

N (S) 0 1 N (R) P 2

000000011

N (R) P/F 2

000001011

N (R) P/F 2

000010011

N (R) P/F 2

011P11111

000F11111

000P00111

010P00111

011F00111

FCS

2 oct

1 oct

FRMR

(Frame reject)

XID

(ID exchange)

: P/F When sent as a command: (P) bit

∗

XID

(ID exchange)

When sent as a response: (F) bit

: Provision of XID is not yet scheduled.

∗

II - 3

100F01111

101P/F11111

TEI management procedure

•

The TEI management procedure includes the following procedures:

. TEI assignment procedure . TEI check procedure . TEI clear procedure . TEI identifying procedure executed by the user as an option

Conceptually, these procedures belong to the layer management entity. The network side layer management entity is referred to as Assignment Source Point (ASP). The TEI management procedure is performed by using the data link layer of a non-confirming type information transfer.

SAPI is set to 63, and TEI is set to 127. The following shows the format of the me ss ag es tr an sf erre d between layer management entities:

oct87654321

1 Management entity indentifier - mei: 15 (0FH) 2 Reference number (Ri) 3 Reference number (Ri) 4 Message type - XXH 5 Operation indication Ai value E=1: End oct

Ri: A value in a range of 0 to 65535 randomly generated by user equipment

Message

name

ID request

→

(User

Net)

ID assignment

(User → Net)

ID reject

→

(Net

User)

ID check re-

quest

→

(Net

User)

ID check re-

sponse

→

Net)

(User

ID clear

→

User)

(Net

ID check

→

Net)

(User

Management

entity

identifier

00001111 0 ~ 65535 00000001 Ai=127: Any TEI is ready

00001111 0 ~ 65535 00000010

00001111 0 ~ 65535 00000011

00001111

00001111 0 ~ 65535 00000101 Ai=0 to 126: TEI value being used

00001111

Reference

number

Not used (Code 0)

Message

type

Ai=64 to 126: TEI is the assigned value

Ai=64 to 126: Request abnormal (Reject TEI) Ai=127: TEI assignment is not possible

00000100

00000110

00000111 Ai=0 to 126: TEI value to check

Ai=127: Check all TEI values Ai=0 to 126: TEI value to check

Ai=127: Request to clear all TEI values Ai=0 to 126: TEI value to clear

Operation indication

II - 4

TEI assignment procedure (call from user)

•

User

SAPI:63, TEI: 127, mei: 15, Ri: XXXXH, Message type 01 (H), Ai: 127

SAPI:63, TEI: 127, mei: 15, Ri: XXXXH, Message type 02 (H), Ai: YYY

D ch

layer 2

SABME

SAPI: 0, TEI: YYY

SAPI:0 , TEI:YYY

D ch

layer 3

B ch

D ch

layer 3

D ch

layer 2

SAPI: 0, TEI: YYY [

Procedure on

SAPI: 0, TEI: YYY [

DISC

SAPI: 0, TEI: YYY

SETUP

]

CALL PROC

CONN

]

CONN ACK

B ch

DISC

]

REL

]

REL COMP

]

II - 5

TEI assignment procedure (call from network)

•

User

D ch

layer 3

D ch

layer 2

D ch

layer 3

B ch

SAPI: 0, TEI: 127 [

SAPI:63, TEI: 127, mei: 15, Ri: XXXXH, Message type 01 (H), Ai: 127

SAPI:63, TEI: 127, mei: 15, Ri: XXXXH, Message type 02 (H), Ai: YYY

SABME

SAPI: 0, TEI: YYY [

SAPI: 0, TEI: YYY

SAPI: 0, TEI:YYY

Procedure on

SETUP

]

CALL PROC

CONN

]

CONN ACK

B ch

]

D ch

layer 3

D ch

layer 2

SAPI: 0, TEI: YYY [

DISC

SAPI: 0, TEI: YYY

II - 6

DISC

]

REL

]

REL COMP

]

III. D Channel, Layer 3

D channel, layer 3-1 (Q.931: I.451)

1 oct

Protocol

discriminator

08H

↓

Table 1

2 oct

1 or 2 oct

Call reference 1H XXH

↓

Table 2

Message type

XXH

N oct

Differs depending on message type

FCS

2 oct

0~N oct

Table 1. Protocol Discriminator

87654321 00000000User’s typical protocol identifier 00000001OSI high layer protocol 00000010Recommendation X.244 00000011Reserved for system management converse function 00000100A5 characters 00000111Standard JT-V.120 speed compatibility 0 0 0 0 1 0 0 0 Standard JT-Q.931 user/network setting message 00010000Reserved for other network layer or layer 3 protocol

| 00111111 01000000National use

01000001 01000010

| 01001111 01010000

| 11111110

Other than above Reserved

including standard JT-X.25

Recommendation X.208/X.209 (ASN.1: Abstract syntax descriptive method 1)

National use

Reserved for other network layer or layer 3 protocol including standard JT-X.25

1 oct

Table 2. Call Reference

87654321

Reserved Call reference length

0 0 0 0 0 0 0 1

F X X X X X X X

III - 1

F=0: Calling side F=1: Called side

1 oct

2 oct

D channel, layer 3-2 (Q.931:I.451)

1 or 2 oct

N oct

FCS

2 oct

1 oct

Protocol

discriminator

08H

Call reference

01H XXH

Table 3. Message Type

Message type

XXH

↓

Table 3

Differs depending on message type

0~N oct

87654321 HEX Name Full name Function

0000001 01 ALERT ALERTING 0000010 02 CALL PROC CALL PROCEEDING

0000011 03 PROG PROGRESS Indicates call progress 0000101 05 SETUP SETUP Call set-up request

0000111 07 CONN CONNECT 0001101 0D SETUP ACK SETUP ACKNOWLEDGE 0001111 0F CONN ACK

0100000 20 USER INFO USER INFORMATION User to user signal 0100001 21 SUSP REJ SUSPEND REJECT

0100010 22 RES REJ RESUME REJECT 0100101 25 SUSP SUSPEND 0100110 26 RES RESUME 0101101 2D SUSP ACK

0101110 2E RES ACK 1000101 45 DISC DISCONNECT Call clear request

1000110 46 REST RESTART Initial setting request 1001101 4D REL RELEASE

1001110 4E REST ACK

1011010 5A REL COMP RELEASE COMPLETE

1100010 62 FAC FACILITY 1101110 6E NOTIFY NOTIFY

1110101 75 STAT ENQ STATUS ENQUIRY Party status inquiry 1111001 79 CONG CON

1111011 7B INFO INFORMATION 1111101 7D STAT STATUS

SETUP ACK, USER INFO, REST, REST ACK, FAC, and CONG CON not provided by NTT (as

Note:

of July 1989)

CONNECT ACKNOWLEDGE

SUSPEND ACKNOWLEDGE

RESUME ACKNOWLEDGE

RESTART ACKNOWLEDGE

CONGESTION CONTROL

III - 2

Informs that receiving side user is being called

Informs that ca l l s et -u p procedure is bei ng execu ted

Called side response notification

Acknowledgement of SETUP

Acknowledgement of CONN

Informs that temporary interruption is rejected

Informs that interrupted call cannot be resumed

Call temporary interrupt request

Interrupted call resume request

Temporary interruption complete notification

Interrupted call resume complete notification

Channel clear complete notification and call number clear request

Initial setting complete notification

Channel clear and call number clear complete notification

Additional service request and check

Notification of call information

Additional call control, and other information

User/network status notification

Informs the status of the user and the network.

Type

Call

setting

During

comm-

uni-

cation

Call

clear

Others

1 oct

2 oct

D channel, layer 3-3 (Q.931:I.451)

1 or 2 oct

N oct

FCS

2 oct

1 oct

Protocol discriminator

08H

Call reference

01H XXH

Table 4. Information Elements

1. SETUP (05)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 05

Bearer capability 04 Channel identifier 18 Optional Facilities 1C Optional Progress identifier 1E Optional Display 28 Optional Keypad 2C Optional Signal 34 Optional Feature activation 38 Optional Feature indication 39 Optional Calling party address 6C Optional Calling party subaddress 6D Optional Called party address 70 Optional Called party su badd ress 71 Optional Transit network selection 78 Optional

Low layer compatibility

High layer compatibility 7D Optional User to user 7E Optional

Mandatory Mandatory Mandatory Mandatory

7C Optional

Table 1 Table 2

Table 5 Table 6 Table 7 Table 8 Table 9

Table 10

Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21

3. ALERT (01)

Information element HEX Type Contents

Protocol discriminator 08

Call reference 01XX

Message type 01 Channel identifier 18 Optional Facilities 1C Optional Progress identifier 1E Optional Display 28 Optional Signal 34 Optional Feature activation 38 Optional Feature indication 39 Optional User to user 7E Optional

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3 Table 6 Table 7 Table 8 Table 9

Table 12 Table 13 Table 21

Message type

XXH

Differs depending on message type

0~N oct

↓

Table 4: 1 to 25

2. CALL PROC (02)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 02

Channel identifier 18 Optional Progress identifier 1E Optional Display 28 Optional Feature indication 39 Optional

Mandatory Mandatory Mandatory

4. PROG (03)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 03

Cause 08 Optional Progress identifier 1E Optional Indication 28 Optional User to user 7E Optional

Mandatory Mandatory Mandatory

5. CONN (07)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 07 Channel identifier 18 Optional Facilities 1C Optional Progress identifier 1E Optional Display 28 Optional Signal 34 Optional Feature activation 38 Optional Feature indication 39 Optional

Low layer compat ibil ity

User to user 7E Optional

Mandatory Mandatory Mandatory

7C Optional

Table 1 Table 2 Table 3 Table 6 Table 8 Table 9

Table 13

Table 1 Table 2 Table 3

Table 22

Table 8 Table 9

Table 21

Table 1 Table 2 Table 3 Table 6 Table 7 Table 8 Table 9

Table 12 Table 13 Table 19 Table 21

III - 3

6. SETUP ACK (0D)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 0D Channel identifier 18 Optional Table 6 Progress identifier 1E Optional Table 8

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

7. CONN ACK (0F)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 0F Channel identifier 18 Optional Table 6 Display 28 Optional Table 9 Signal 34 Optional

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

8. USER INFO (20)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 21 More data 08 Optional Table 23 User to user 28 Optional Table 21

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

9. SUSP REJ (21)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 21 Cause indication 08 Optional Table 22 Display 28 Optional Table 9

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

10. RES REJ (22)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 22 Cause 08 Optional Table 22 Display 28 Optional Table 9

Fixed shift procedure 96 Optional Table 24 Charge notification 01 Optional Table 25

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

11. SUSP (25)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 25

Call identification 20 Optional Table 26

Mandatory Mandatory Mandatory

12. RES (26)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 26

Call identification 20 Optional Table 26

Mandatory Mandatory Mandatory

13. SUSP ACK (2D)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 2D

Display 28 Optional Table 9

Mandatory Mandatory Mandatory

14. RES ACK (2E)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX

Message type 2E Channel identifier 18 Optional Table 6 Display 28 Optional Table 9

Mandatory Mandatory Mandatory

15. DISC (45)

Information element HEX Type Contents

Protocol discriminator 08

Call reference 01XX

Message type 45 Cause 08 Optional Table 22 Facilities 1C Optional Table 7 Progress identifier 1E Optional Table 8 Display 28 Optional Table 9 Signal 34 Optional Table 11 Feature indication 39 Optional Table 13 User to user 7E Optional Table 21 Fixed shift procedure 96 Optional Table 24 Charge notification 01 Optional Table 25

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

III - 4

16. REST (46)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX

Message type 46 Channel identifier 18 Optional Table 6 Display 28 Optional Table 9 Initial setting indication 79 Optional Table 27

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

17. REL (4D)

Information element HEX Type Contents

Protocol discriminator 08

Call reference 01XX

Message type 4D Cause 08 Optional Table 22 Facilities 1C Optional Table 7 Display 28 Optional Table 9 Signal 34 Optional Feature indication 39 Optional Table 13 User to user 7E Optional Table 21 Fixed shift procedure 96 Optional Table 24 Charge notification 01 Optional Table 25

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

18. REST ACK (4E)

Information element HEX Type Contents

Protocol discriminator 08

Call reference 01XX

Message type 4E Channel Identifier 18 Optional Table 6 Display 28 Optional Table 9

Initial setting indication 79

Mandatory Mandatory Mandatory

Mandatory

Table 1 Table 2 Table 3

Table 27

20. FAC (62)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 62 Facilities 1C Display Optional Table 9

Mandatory Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3 Table 7

21. NOTIFY (6E)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 6E Transfer capability 04 Optional Table 5

Notification identifier 27 Display 28 Optional Table 9

Mandatory Mandatory Mandatory

Mandatory

Table 1 Table 2 Table 3

Table 28

22. STAT ENQ (75)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 75

Display 28 Optional Table 9

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

23. CONG CON (79)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 79

Congestion BX Cause 08 Optional Table 22 Display 28 Optional Table 9

Mandatory Mandatory Mandatory

Mandatory

Table 1 Table 2 Table 3

Table 29

19. REL COMP (5A)

Information element HEX Type Contents

Protocol discriminator 08

Call reference 01XX

Message type 5A Cause 08 Optional Table 22 Facilities 1C Optional Table 7 Display 28 Optional Table 9 Signal 34 Optional Feature indication 39 Optional Table 13 User to user 7E Optional Table 21 Fixed shift procedure 96 Optional Table 24 Charge notification 01 Optional Table 25

Mandatory Mandatory Mandatory

Table 1 Table 2 Table 3

24. INFO (7B)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX

Message type 7B Cause 08 Optional Table 22 Display 28 Optional Table 9 Keypad 2C Optional Table 10 Signal 34 Optional Feature activation 38 Optional Table 12 Feature indication 39 Optional Table 13

Mandatory Mandatory Mandatory

III - 5

Table 1 Table 2 Table 3

25. STAT (7D)

Information element HEX Type Contents Protocol discriminator 08 Call reference 01XX Message type 7D Cause 08 Call status 14

Display 28 Optional Table 9

Mandatory Mandatory Mandatory

Mandatory

Table 1 Table 2

Table 3 Table 22 Table 30

III - 6

Table 5. Bearer Capability (04)

87654321oct

Information element identifier 1

00000100

L I 2

Coding standard Information transfer capability 3

Extension

00:CCITT standard 01:Other international

10:National standard

11:Standard specific

standard

to network

Transfer mode Information transfer rate 4

Extension

1/0

00:Circuit-switched

exchange 10:Packet exchange Others: Reserved

Structure Configuration Establishment

Extension

1/0

000: Default 001: 8 kHz integrity 100: Service data unit integrity 111: Reserved Others: Reserved

Mode Information transfer rate (destination to origin)

Extension

00:Bidirectional

symmetric Others: Reserved

Layer 1 identifier User information layer 1 protocol

Extension

1/0

Extension

1/0

Synchronous/ asynchronous

0: Synchronous 1: Asynchronous

Inbound negotiation

0: Negotiation not possible 1: Negotiation possible

Layer 2 identifier User information layer 2 protocol

Extension

1 0

Layer 3 identifier User information layer 3 protocol

Extension

1 0

00000:Voice (speech) 01000:Unrestricted digital information 01001:Reserved 10000:3.1 kHz audio 11000:Reserved Others: Already reserved

00000:Packet exchange 10010:Reserved 10000:64 kbps 10011:384 kbps 10101:1536 kbps 10111:Reserved Others: Reserved

00:Point to point Others: Reserved

00000:Packet exchange 10010:Reserved 10000:64 kbps 10011:384 kbps 10101:1536 kbps 10111:Reserved Others: Reserved

00001:CCITT speed compatibility (V.110/X.30): Indicates that 5a to

5d exist. 00010:Recommendation G.711 00011:Recommendation G.711 A-law voice

01001:CCITT standard speed compatibility (JT-X.31): HDLC

flag stuffing

-law voice

00:Immediate

connection

Others: Reserved

User speed

0111: 56 kbps Recommendation V.110 Others: Reserved

Unprovided

00010: TTC standard JT-Q.921 00110: TTC standard JT-X.25 link layer Others: Reserved

00010: TTC standard JT-Q.931 00110: TTC standard JT-X.25 packet layer Others: Reserved

*: Option

4a*

4b*

5a*

5b* 5d*

III - 7

Table 6. Channel Identifier (18)

87654321oct

Information element identifier 1

00011000

L I 2

Exten-

sion

Int

type

Spare

Pre/

Excl

D ch

ind

Information channel

0: Specified channel is not channel D 1: Specified channel is channel D

0: Network can change channel specified by

terminal

1: Network cannot change channel

specified by terminal

0: Basic interface 1: Other interface (primary group interface, etc.)

0: Interface implicitly identified 1: Interface explicitly identified by 1 or more octets from oct 3.1

selection

00: No channel 01: B1 channel 10: B2 channel 11: Any channel

87654321

Extension

Coding standard

00:CCITT/TTC

standard

01:Reserved for inter-

national standards other than CCITT/TTC

standard 10:National standard 11:Standard specific

to network

Interface identifier

Number/map

0: Indicates to next oct by number 1: Indicates to next oct by slot

Channel type/map element type

0011: Channel B unit 0110: Channel H0 unit 1001: Reserved Others: Reserved

Channel number/slot map

III - 8

oct

3.1*

3.2*

3.3*

*: Option

Table 7. Facilities (1C)

87654321

Information element identifier

00011100

L I

Extension

Reserved Service identifier

0 0

10001: Additional service application Others: Already reserved

Components

Table 8. Progress Identifi er (1E)

87654321

Information element identifier

00011110

L I

Extension

Coding standard

00:CCITT standard 01:Other internation-

al standard 10:National standard 11:Standard specific

to generation

source indicated

by bits 3 to 1 of

oct 3

Reserved

0000: User 0001: Private network accommodating local

0010: Public network accommodating local users 0011: Relay network

0100: Public network accommodating remote 0100: Private network accommodating remote 0101: International network

0111: Interworking destination network 1010: Reserved

Generation source

users (self side) (self side)

users (other party side) users (other party side)

oct

2 3

. .

oct

2 3

Extension

Progress description

0000001:Call is not end-to-end ISDN. Afterwards, progress information

becomes inbound signal. 0000010:Non-ISDN destination 0000011:Non-ISDN originator 0000100:Returning call onto ISDN 0001000:Inbound signal or appropriate pattern can be used Others: Already reserved

III - 9

Table 9. Display (28)

87654321

Information element identifier

00101000

L I

Display infor mat io n

(IA5 characters)

MAX 32/80 oct

Table 10. Keypa d Facility (2C)

87654321

Information element identifier

00101100

L I

Keypad facility information

(IA5 characters)

MAX 32 oct

oct

. . .

oct

. . .

III - 10

Table 11. Signal (34)

87654321

Information element identifier

00110100

L I

00000001

Signal value

00000000: Dial tone 00000001: Calling tone 00000010: Interrupt tone 00000011: Network tone ON 00000100: Busy tone ON 00000101: Check tone ON 00000111: Response tone ON 00001000: Off hook warning tone ON 00111111: Tone OFF 01000000: Calling ON pattern 0 01000001: Calling ON pattern 1 01000010: Calling ON pattern 2 01000011: Calling ON pattern 3 01000100: Calling ON pattern 4

Method of use depends on the network

01000101: Calling ON pattern 5 01000110: Calling ON pattern 6 01000111: Calling ON pattern 7 01001111: Calling OFF Others: Reserved

Table 12. Featu re Activation (38)

oct

87654321

Information element identifier

00111000

L I

Extension

1/0

Extension

Feature identifier number (continued from above)

Feature identifier number

III - 11

oct

Table 13. Featu re Indication (39)

87654321

Information element identifier

00111001

L I

Extension

1/0

Extension

Feature identifier number (continued from above)

Feature identifier number

Reserved Feature status indication

0000: InactiveFeature is in inactive condition 0001: Active Feature is in active condition

0000

0010: Prompt Feature is in prompt condition 0011: Execution Feature is in execution

Other: Already reserved

Status

condition

Meaning

Table 14. Calling Party Address (6C)

87654321

Information element identifier

01101100

L I

Number type Numbering/addressing plan

0000: Undefined 0001: ISDN/phone numbering plan

(recommendation E.164/E.163)

0011: Data numbering plan

(recommendation X.121)

0100: Telex numbering plan

(recommendation F.69) 1000: National numbering plan 1001: Private network numbering plan 1111: Reserved for expansion Others: Reserved

Network check identifier

00:Reserved 01:User insertion,

000

10:Reserved 11:Network insertion

Number digit

(IA5 characters)

MAX 32 oct

network check made, successful

Extension

1/0

Extension

Reserved

000: Undefined 001: International number 010: National number

Number specific to network

011: 100: Local number 110: Short dial number 111: Reserved for expansion Others: Reserved

Indication identifier Reserved

00:Indication possible 01:Indication not

possible

10:Mutual connection

condition, and no number can be displayed

11:Reserved

oct

. . .

===

III - 12

Table 15. Calling Party Subaddress (6D)

87654321

Information element identifier

01101101

L I

Odd/even indication

0: Number of address signals is even 1: Number of address signals is odd

Reserved

000

Extension

Subaddress type

000: NSAP (X.213/ISO 8348 AD2) 010: Subaddress specific to user Others: Reserved

Format identification (AFI) [Indicates that subaddress is configured in IA5 characters] 01010000

Subaddress information

(IA5 characters)

MAX 19 oct

Table 16. Called Party Address (70)

87654321

Information element identifier

01110000

L I

Type of address Numbering plan identifier

0000: Undefined 0001: ISDN/phone numbering plan

(recommendation E.164/E.163)

0011: Data numbering plan

(recommendation X.121)

0100: Telex numbering plan

(recommendation F.69)

1000: National numbering plan

Extension

000: Undefined 001: International number 010: National number 011: Network specific number 100: Local number 110: Short dial number 111: Reserved for expansion Others: Reserved

1001: Private network numbering plan 1111: Reserved for expansion Others: Reserved

Reserved

Number digit

(IA5 characters)

MAX 19 oct

oct

. . .

oct

2 3

. .

III - 13

Table 17. Called Party Subaddress (71)

87654321

Information element identifier

01110001

L I

Odd/even indication

0: Number of address signals is even 1: Number of address signals is odd

Reserved

000

Extension

Subaddress type

000: NSAP (X.213/ISO 8348

AD2) 010: Subaddress specific to user Others: Reserved

Format identifier (AFI) [Indicates that subaddress is configured in IA5 characters]

01010000

Subaddress information

(IA5 characters)

MAX 19 oct

Table 18. Trans it Network Selection (78)

87654321

Information element identifier

01111000

L I

Network identification type Network identification plan

Extension

000: User definition 010: National network 011: International network

Others: Reserved

0000: Undefined 0001: Carrier identification code 0011: Data network identification code

(recommendation X.121)

Others: Reserved

Network identifier

(IA5 characters)

oct

2 3

. .

oct

2 3

. .

III - 14

Table 19. Low Layer Compatibility (7C)

87654321oct

01111100

Coding standard Information transfer capability 3

00:CCITT standard

Extension

01:Other international

standard

10:National standard

1/0

11:Standard specific

to network

Negotiation

specification

0: Outbound negotiation

not possible 1: Outbound negotiation possible

Transfer mode Information transfer rate 4

00:Circuit-switched

exchange 10:Packet exchange Others: Already reserved

1/0

000: Default 001: 8 kHz integrity 100: Service data unit integrity

1/0

111: Reserved Others: Reserved

00:Bi-directional

symmetric Others: Reserved

Layer 1 identifier Layer 1 protocol identifier 5*

1/0

000000

Structure Configuration Establishment 4a

Mode Information transfer rate (destination to origin) 4b

Information element identifier 1

L I

00000:Voice (Speech) 01000:Unrestricted digital information 01001:Reserved 10000:3.1 kHz audio 10001:Reserved 11000:Reserved Others: Already reserved

Reserved 3a*

00000:Packet exchange 10010:Reserved 10000:64 kbps 10011:384 kbps 10101:1536 kbps 10111:Reserved Others: Reserved

00:Point to point Others: Reserved

00000:Packet exchange 10010:Reserved 10000:64 kbps 10011:384 kbps 10101:1536 kbps 10111:Reserved Others: Reserved

00000:Undefined 00001:CCITT recommendation I.461 speed compatibility

00010:Recommendation G.711 00011:Recommendation G.711 A-law speech 00100:Recommendation G.721 32 kbps-ADPCM and

recommendation I.460 00110:Recommendation G.722 and 7 kHz-audio 00111:TTC non-standard speed compatibility (indicates

use of 5a-5d) 01000:TTC standard JT-V.120 speed compatibility (indicates

use of 5a-5d) 01001:TTC standard JT-X.31 speed compatibility (HDLC

flag stuffing)

-law speech

00:Immediate

connection

Others: Reserved

↓

Continued on nex t pa ge

III - 15

+ 81 hidden pages

Ricoh ISDN Protocol Handbook

Specifications and Main Features

Frequently Asked Questions

User Manual

LAYER 1 CONFIGURATION DIAGRAM

Example of pseudo-ternary signalling (AMI Code)

Layer 1 Status

TE (Terminal Equipment) Status

NT (Network Termination) Status

INFO Signals

Activation Procedure from the TE

Activation Procedure from the NT

Termination Procedure from the NT

Configuration of Dch layers 1 to 3

D channel, layer 2-1 (Q.921:I.441:LAPD)

D channel, layer 2-2 (Q.921:I.441:LAPD)

TEI management procedure

TEI assignment procedure (call from user)

TEI assignment procedure (call from network)

D channel, layer 3-1 (Q.931: I.451)

D channel, layer 3-2 (Q.931:I.451)

Message type

D channel, layer 3-3 (Q.931:I.451)