Communication Protocols; Protocol And Topology Type - ASCOM Ascotel 2025 System Manual

ascom Ascotel 2025/2045/2065
4.4

Communication Protocols

The system supports the two main protocols for setting up a PISN:
• The ISDN protocol DSS1 is used mainly in virtual networks.
• The QSIG / PSS1 protocol is based on an international standard that is sup-
ported by all leading PBX providers. QSIG / PSS1 is used to set up private net-
works with very high performance and capacity.
4.4.1

Protocol and Topology Type

The system supports any combination of protocol and topology type. Normally,
however, the QSIG / PSS1 protocol is used for leased-line networking and the
DSS1 protocol for virtual networking.
DSS1
PINX 1
[1] QSIG / PSS1 protocol in a leased-line network
[2] DSS1 protocol in a virtual network
Fig. 1.23: Normally used protocols
1.36 Networking the Systems
Public network
QSIG DSS1
PINX 2
haz0657aaena0
[1]
DSS1 (DSS1)
PINX 1 PINX 2
[2]
HBT_20321104_01/B0_en
Public network
DSS1
haz0658aaena0