<rew ¤ fwd>

3.2.9 SETUP

This message is sent by the calling user to the network and by the network to the called user to initiate access connection establishment. See Table 3-31.

Table 3-31/Q.931

SETUP message content

Message type: SETUP
Significance: global
Direction: both

Information element

Reference
(subclause)

Direction

Type

Length

Protocol discriminator

4.2

Both

M

1

Call reference

4.3

Both

M

2-*

Message type

4.4

Both

M

1

Bearer capability

4.5

Both

M (Note 1)

4-12

Channel identification

4.5

Both

O (Note 2)

2-*

Progress indicator

4.5

u ® n

O (Note 3)

2-4

Display

4.5

n ® u

O (Note 4)

(Note 5)

Information rate

4.7

n ® u

O (Note 6)

2-6

End-end transit delay

4.7

n ® u

O (Note 8)

2-11

Transit delay selection and indication

4.7

n ® u

O (Note 7)

2-5

Packet layer binary parameters

4.7

n ® u

O (Note 9)

2-3

Packet layer window size

4.7

n ® u

O (Note 10)

2-4

Packet size

4.7

n ® u

O (Note 11)

2-4

Closed user group

4.7

n ® u

O (Note 12)

4-7

Reverse charging indication

4.7

n ® u

O (Note 13)

3

Calling party number

4.5

Both

O (Note 14)

2-*

Calling party subaddress

4.5

Both

O (Note 15)

2-23

Called party number

4.5

n ® u

O (Note 16)

2-*

Called party subaddress

4.5

n ® u

O (Note 17)

2-23

Redirecting number

4.7

n ® u

O (Note 18)

2-4

User-user

4.5

n ® u

O (Note 19)

(Note 20)

NOTES

1. May be used to describe a CCITT telecommunication service involving packet-mode access connections, if appropriate.

2. Mandatory in the network-to-user direction. Included in the user-to-network direction when the user wants to indicate a channel. If not included, its absence is interpreted as "any channel acceptable".

3. Included in the event of interworking within a private network.

4. Included if the network provides information that can be presented to the user.

5. The minimum length is 2 octets; the maximum length is network dependent and is either 34 or 82 octets.

6. Included in the network-to-user direction if the network implements X.25 [5]/Q.931 information element mapping and provides indication to the called user of the information rate for the call.

7. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the maximum permissible transit delay for the call.

8. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the end-end transit delay for the call.

9. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the packet layer binary parameters for the call.

10. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the packet layer window size for the call.

11. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the packet size for the call.

12Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called party of the closed user group that belongs for that call.

13. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called party of the reverse charging request that applies for that call.

16. Included in the user-to-network direction depending on the user/network identification requirements. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the calling party number.

15. Included in the user-to-network direction depending on the user/network identification requirements. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the calling party subaddress.

16. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the called party number.

17. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the called party subaddress.

18. Included in the network-to-user direction if the network implements X.25/Q.931 information element mapping and provides indication to the called user of the number from which a call diversion or transfer was invoked.

19. Included in the network-to-user direction if the calling user included user information and the network implements X.25/Q.931 information element mapping.

20. The minimum length is 2 octets; the standard default maximum length is 131 octets.