ZyXEL Communications IP PBX X6004 - Manual (Page 273)

X6004 User’s Guide
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H A P T E R
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Outbound Line Group
18.1 Overview
This chapter shows you how to manage outside lines on the X6004.
The following diagram shows the X6004 connected to the various types of outside
connections:
• FXO/PRI/BRI Trunk (A): shows the X6004 connected to the PSTN (Public
Switched Telephone Network) or ISDN (Integrated Service Digital Network) via
an FXO/PRI/BRI port on the X6004. You can also use the FXO ports to connect
to a traditional analog PBX, use the PRI port to connect to a primary rate
interface, use the BRI port to connect to a basic rate interface, if your
organization has one. You must have an FXO/PRI/BRI interface card installed on
the X6004 to configure these connections.
• SIP Trunk (B): shows the X6004 connected to a SIP gateway at your VoIP
service provider (ITSP: Internet Telephony Service Provider). You can use the
SIP trunk to connect to a SIP gateway on which you have an existing SIP
account.
• Trusted Peer (C): shows the X6004 connected to another X6004 (for example,
at your branch office). You can establish a trusted peer connection with another
SIP server that lists your X6004 as a trusted peer.
Figure 136 Outbound Line Overview
PSTN
ITSP B
A
C
/ISDN