System Functions and Features as of I7.9
238
Data services
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d-
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0/3.
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– I7.
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6. 4
User-to-user signalling (UUS)
The service "user-to-user signalling" allows users to exchange a limited volume of
data (128 bytes per user) among themselves over the signalling channel (D chan-
nel) during the phase of connection set-up and clear-down. The exchange of data
takes place even if a call is not answered.
Requirements:
•
Both users must have subscribed to the service with the network provider.
•
The ISDN terminals or CTI applications used must support the service. System
terminals do not support the service.
Scope
The PBX supports the service in variants 1 and 3 as per ETS 300 286, UUS1.
UUS is not supported in the private leased-line network and is only available at the
PINX which is connected to the public network.
Ascotel® IntelliGate® Net:
UUS is not supported in an AIN. The service is available only at the nodes
that are connected to the public network.
Application examples:
•
Message to all callers, stating that the user will only be available again later: User
B
→
user A
•
Reference to a required callback: User A
→
user B
•
Appointment transmission: User A
↔
user B
•
Advance transmission of a code word or ID for logging into a system (user B)
from a CTI application: User A
→
user B
