Mitel 430 - Network Interfaces

System interfaces
24
System functions and features as of R4.1
syd-0570/1.2 – R4.1 – 08.2016
2. 1 Network Interfaces
The system supports the following types of network interfaces:
• Basic rate interface BRI-T for connection to
– the public ISDN network
– the private leased-line network
• Basic access BRI-S
external for connection to
– the private leased-line network
– a terminal with its own direct dialling plan (DDO)
• Primary rate access PRI for connection to
– the public ISDN network
– the private leased-line network
• SIP access via the Ethernet interface on the basic system for connection to SIP pro-
vider.
• Analogue network interface FXO for connection to the public analogue network
2. 1. 1 Basic Access Variants
A basic access is a digital network interface for connection to the public network or to
the private leased-line network. It can be set for the protocols DSS1 (public ISDN net-
work) and QSIG / PSS1 (private leased-line network).
A basic access has two 64 kbit/s user information channels and one 16 kbit/s control
and signalling channel (2B+D).
One call or data connection can be set up on each bearer channel (B channel) simulta-
neously and independently of the other B channel.
A basic access can be barred for outgoing calls ( Outgoing barred).
Basic accesses for connecting the communication server to the public network can be
operated as point-to-point and, with some network providers, also as point-to-multi-
point (multiple subscriber number) access.
There are two types of basic access:
• Basic rate interface BRI-T
• Basic rate interface BRI-S
external
2. 1. 1. 1 Basic rate interface BRI-T
Basic access T is suitable for connection to both the public ISDN network and the pri-
vate-leased-line network.