Isdn pri connection – 2N StarGate/BlueTower v5.4 User Manual
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Voice codec support
G.711u , G.711a , G.723 at 6.3/5.3bps ,
G.729a,b
Default RTP ports
8000 – 8998 (adjustable by web interface)
Supported signalling
SIP
Default IP port for signalling
5060 (adjustable by web interface)
STUN protocol
Supported IP address check
Interface for SIP
10BaseT Ethernet interface on basic CPU
card
Interface for RTP streams
10/100BaseT Ethernet interface on VoIP
card
Maximum number of simultaneous
calls
2N StarGate
®
30
2N BlueTower
®
8
The VoIP board is designed as a media gateway. It works only with media packets
(RTP); signalling packets (SIP) must be routed to the basic CPU IP address.
TIP
You have to restart the VoIP card upon any VoIP setting change.
Caution
For a successful VoIP card initialisation, the VoIP board MAC
address has to be filled in correctly and the basic CPU must be
switched to the VoIP–SIP mode and contain the VoIP firmware
file.
The integrated Ethernet will not work until the VoIP card has
been initialised successfully.
ISDN PRI Connection
The gateway can contain a PRI card with one or two ISDN PRI interfaces (depends on
the part number). PRI 1 is always set as an internal interface (PBX connection) and PRI
2 as an external interface (PSTN connection). The Least Cost Routing (LCR) and
additional routing mechanisms are activated on the internal interface. All incoming calls
to the external interface are always routed directly to the internal interface.