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PBX Networking
PBX 1
Public
L1 slave
network
L2 slave
L3 master
L1 master
L2 master
Point-to-point connection via a public network
12.2.4 Connection via Q.SIG.IP
If you are operating a fast and continuous internet connection at two or more
locations, you can establish the TK system networking via internet connection as
well. The OpenCom 100 uses the Q.SIG protocol, for use with ISDN point-to-point
connections and transports the protocol and voice data via IP connections.
The number of simultaneous conversations possible will depend on the capacity
of the internet connection and the compression method used. A multiple S
point-to-point connection is simulated for each Q.SIG-IP bundle. This means that 5
virtual D channels and up to 120 voice channels are available. Both Media Gateway
Card channels and the Media Gateway software function can be used for Q.SIG-IP.
Q.SIG-IP connection data are subject to codec compression (please refer to Voice
over IP (VoIP) chapter regarding Fundamentals starting on page 107). Q.SIG-IP also
transfers the voice data directly from terminal to terminal via the RTP protocol. In
certain cases, for example, when an incoming external call is placed via multiple TK
systems, one or more RTP proxies may be used to forward the connection.
Currently, there are no standards for the necessary extensions to the Q.SIG pro-
tocol. This means that you can only use Q.SIG-IP between Aastra 800 and
OpenCom systems.
Networking two OpenCom 100 systems using Q.SIG-IP requires 2 licences – one
licence per system. The number of possible voice connections is not restricted by
the licence.
Go to the Telephony: Trunks: Bundle page in the Configurator to set up a Q.SIG-
IP connection. Create a new bundle and select the Access type "System Access".
Select "Q.SIG-IP" under Protocol. Configure the IP address of the other system, the
port numbers to be used, the number of possible voice connections and select a
VoIP profile for the codec selection. Please refer to the relevant help topics in the
Online Help for the OpenCom 100 as well.
158
PBX 2
L1 slave
L2 slave
L3 slave
Types of Point-to-Point Connections
2M
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