Aastra Telecom 800 User Manual

PBX Networking

Connections

92

Aastra 800 provides all the features necessary for PBX networking. You need PBX 
networking in the following cases:

■

To operate the Aastra 800 as a subsidiary system on another PBX. This will also 
allow you to use the Aastra 800 as a DECT server, for example.

■

To network the Aastra 800 with an OpenCom 1000. In this way you can use the 
Aastra 800 as a PBX for a branch office, for instance.

■

To network several Aastra 800s into a PBX system.

■

To use flexible configuration possibilities of SIP trunks for a Aastra 800.

All settings that affect the configuration of PBX networking can be found in the 
Configurator menu Telephony: Trunks and in the Telephony: Settings dialog 
under QSIG linking. Refer also refer to the corresponding help topics in the 
Aastra 800 online help.

You can use IP connections (Q.SIG-IP protocol) for TK system networking.

Networking two or more TK systems means interconnecting them. The Aastra 800 
allows you to use the following connections:

■

SIP trunks

■

IP network connections (Q.SIG-IP)

A Q.SIG-IP network connection can be established using a fast VPN connection. 
When the connection is via internet, encryption is advisable for security reasons.

Q.SIG-IP connection

SIP trunk

PBX

PBX

PBX

PBX

PBX