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.
SETUP message content
Message type: SETUP |
||||
Information element |
Reference |
Direction |
Type |
Length |
Protocol discriminator |
Both |
M |
1 |
|
Call reference |
Both |
M |
2-* |
|
Message type |
Both |
M |
1 |
|
Bearer capability |
Both |
M (Note 1) |
4-12 |
|
Channel identification |
Both |
O (Note 2) |
2-* |
|
Progress indicator |
u ® n |
O (Note 3) |
2-4 |
|
Display |
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 |
Both |
O (Note 14) |
2-* |
|
Calling party subaddress |
Both |
O (Note 15) |
2-23 |
|
Called party number |
n ® u |
O (Note 16) |
2-* |
|
Called party subaddress |
n ® u |
O (Note 17) |
2-23 |
|
Redirecting number |
4.7 |
n ® u |
O (Note 18) |
2-4 |
User-user |
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. |