ASCOM Ascotel 2025 - Page 74

ascom Ascotel 2025/2045/2065
HBT_20321104_01/B0_en System Interfaces 1.19
3.1.3 Analogue Network Interfaces
The analogue network interfaces support DTMF and pulse dialling.
3.2 User-Network Interfaces
The PBX supports digital and analogue user-network interfaces.
3.2.1 Digital User-Network Interfaces S and AD2
On each of these interfaces several appropriate terminals can be hooked up and
powered simultaneously.
Each of these interfaces has two 64 kbit/s user information channels and one 16
kbit/s control and signalling channel (2B+D). This makes it possible to establish
two independent call or data connections simultaneously.
S User-Network Interface
The S user-network interface is a digital 4-wire interface used for connecting sys-
tem terminals, ISDN terminals, Terminal Adapters and ISDN PC cards. The PC
Operator is connected via a special Terminal Adapter.
Fig. 1.11: S user-network interface
PBX /
PINX
PINX
S
S
ETSI
4
PC or
ISDN terminal
V2
4
PC Operator
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S external
T
4