9 Interworking considerations
22.0873GPPService descriptionStage 1TSUser-to-User Signalling (UUS)
The UUS supplementary service can be delivered only when both subscribers’ networks provide a means of conveying the UUI.
Some networks may support the transmission of UUI with a maximum length of only 32 octets per message for service 1. In the interworking case only the first 32 octets of UUI with more than 32 octets per message shall be transferred. No notification about the limitation of the UUI shall be given to any subscriber.
Annex A (informative):
Deviations of the 3GPP UUS supplementary service from the ISDN service
The ISDN service UUS allows as a network option the transfer of UUI with a maximum length of 32 octets for service 1. This option shall not be supported in PLMNs. However there is the possibility that networks using the phase 1 or phase 2 standard can support the UUS service 1 implicitly requested with 32 octets. These networks shall apply the rules defined in the section 8, Interworking considerations.
In the 3GPP specification some charging requirement are defined. These requirements shall allow network operators to charge their subscribers for the use of and to prevent misuse of the UUS supplementary service.
Because of the different handling of busy states in ISDN the interactions with call forwarding on mobile subscriber busy are different.
The network option to allow forwarding of UUS requests and UUI only if the forwarding subscriber has the subscription of the relevant UUS service is not supported.
The general principle of CCBS to retain all information of the original call set-up and reusing this information for the CCBS call shall also be valid for the UUS supplementary service. Therefore the UUI contained in the original call set-up shall be stored in network and reused in the CCBS call.
Annex B:
Change history
|
Change history |
|||||||||||
|
TSG SA# |
SA Doc. |
SA1 Doc |
Spec |
CR |
Rev |
Rel |
Cat |
Subject/Comment |
Old |
New |
WI |
|
Jun 1999 |
GSM 02.87 |
Transferred to 3GPP SA1 |
7.1.0 |
||||||||
|
SA#04 |
22.087 |
R99 |
Transferred to 3GPP SA1 |
3.0.0 |
|||||||
|
SP-05 |
SP-99479 |
S1-99634 |
22.087 |
001 |
R99 |
D |
Editorial changes for alignment |
3.0.0 |
3.0.1 |
Editorial changes |
|
|
SP-05 |
SP-99450 |
S1-99788 |
22.087 |
002 |
R99 |
B |
Multicall (This CR was wrongly marked as 22.086 and should be to 22.087) |
3.0.1 |
3.1.0 |
Multicall |
|
|
SP-11 |
SP-010065 |
S1-010258 |
22.087 |
Rel-4 |
Transferred to 3GPP Release 4 |
3.1.0 |
4.0.0 |
||||
|
SP-16 |
SP-020267 |
S1-021043 |
22.087 |
Rel-5 |
Updated from Rel-4 to Rel5 |
4.0.0 |
5.0.0 |
||||
|
SP-26 |
SP-040744 |
S1-040997 |
22.087 |
Rel-6 |
Updated from Rel-5 to Rel-6 |
5.0.0 |
6.0.0 |
||||
|
SP-36 |
22.087 |
Rel-7 |
Updated from Rel-6 to Rel-7 |
6.0.0 |
7.0.0 |
||||||
|
SP-42 |
– |
– |
Rel-8 |
Updated from Rel-7 to Rel-8 |
7.0.0 |
8.0.0 |
|||||
|
SP-46 |
– |
– |
– |
– |
– |
– |
– |
Updated to Rel-9 by MCC |
8.0.0 |
9.0.0 |
|
|
2011-03 |
– |
– |
– |
– |
– |
– |
– |
Update to Rel-10 version (MCC) |
9.0.0 |
10.0.0 |
|
|
2012-09 |
– |
– |
– |
– |
– |
– |
– |
Updated to Rel-11 by MCC |
10.0.0 |
11.0.0 |
|
|
2014-10 |
– |
– |
– |
– |
– |
– |
– |
Update to Rel-12 version (MCC) |
11.0.0 |
12.0.0 |
|
|
2015-12 |
– |
– |
– |
– |
– |
– |
– |
Updated to Rel-13 by MCC |
12.0.0 |
13.0.0 |
|
|
2017-03 |
– |
– |
– |
– |
– |
– |
– |
Updated to Rel-14 by MCC |
13.0.0 |
14.0.0 |
|
|
2018-06 |
– |
– |
– |
– |
– |
– |
– |
Updated to Rel-15 by MCC |
14.0.0 |
15.0.0 |
|
|
SA#88e |
– |
– |
– |
– |
– |
– |
– |
Updated to Rel-16 by MCC |
15.0.0 |
16.0.0 |
|
|
2022-03 |
– |
– |
– |
– |
– |
– |
– |
Updated to Rel-17 by MCC |
16.0.0 |
17.0.0 |
|