Aastra Ascotel IntelliGate A150 System Manual page 30

Interfaces and Terminals as of I7.8
Format of the ETSI S-bus
The format on the ETSI S-bus can be configured in the interface configuration for
each S interface.
Tab. 9 System configuration: Format of the ETSI S-bus
Parameter
MSN format on the S-bus
Exchange Access Prefix for Terminals on the ETSI S Bus
For terminals on the ETSI S-bus the interface configuration can be used to select
whether or not the exchange access prefix of the CLIP should be truncated for in-
coming calls (setting
setting is effective only in the S-bus mode
Ascotel® IntelliGate® Net:
In an AIN the call charge format of ISDN terminals depends on the coun-
try and is based on the country configured with the AIN region of the
node concerned or user. User allocation takes priority over a node-spe-
cific allocation.
Voice and data terminals on the S interface
Both voice and data terminals can be connected to the same S interface. When de-
signing the system, bear in mind that data terminals can also take up user informa-
tion channels. ISDN routers and ISDN PC cards that support channel bundling can
take up both user information channels.
In mixed operation the availability of the terminals has to be taken into account.
One call or data connection can be set up on each bearer channel (B channel) si-
multaneously and independently of the other B channel.
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Parameter value Remarks
• TSD • Single-digit terminal selection digit (TSD) as per interface
configuration
• User No. • Default setting
• Mode of operation as customary in the public ISDN network
• DDI No. • For special applications (e.g. Unified Messaging Systems).
• If the DDI number is missing, the system attempts to trans-
mit one of the following numbers, in the sequence shown
below: Number of the CDE, UG number, user number.
• Also functions internally.
Delete exchange access prefix, Inizialitation setting = No"). This
(S bus protocol =ETSI).
System Interfaces