Aastra Ascotel IntelliGate 2065 - 6.1.5 Protocols and licences; 6.1.6 Reliability aspects

Ascotel IntelliGate 2025/2045/2065
Part 3 Planning a private network 667
• Fibre optic cables with transmission facilities
The type of leased lines available depends on the service provider.
Transmission facilities for basic accesses:
•PT 10 S bus extension up to 8km line length (see "S Bus Extension PT
10", page 138)
• HDSL modem for basic accesses, 2 or 4-wire variants
• HDSL modem for multiplex for combined telephony and data networks
6.1.5 Protocols and licences
The PSS1 (QSIG) protocol is generally used in the private leased-line network. The
appropriate licence is required (see also "Licence-related System and Expansion
Limits", page 593). Connections to the public network normally use the DSS1
protocol.
DSS1 should not be used on S external as otherwise only Base Call is supported.
6.1.6 Reliability aspects
Connection reliability in a private leased-line network
If a network consists of several systems, connection reliability can be increased if
there are two or more paths in each case between two systems.