Avaya 38DHB0002UKDD Manuel D’Utilisation

How Do I? 

Part 1 IP Connectivity - Page 85 

When using an indirectly connected WAN or VPN router these devices should be 
capable of handling marked traffic at a priority to ensure prompt handling of voice 
traffic. Alternatively, over supplying the available bandwidth will ensure that all 
packets, voice and data, are handled quickly. 

The VPN Line should be used to set the maximum number of simultaneous voice 
call and the System/Gatekeeper tab (see page 37) should be used to specify the 
DSCP (TOS or Diffserv) value for the VoIP traffic type. 

See Configure VPN Line on page 99 and QoS over WAN between IPNC & 3rd 
Party Router on page 88 for details. 
 

This application example is suitable for VoIP between Site 1 and Site 2. All inter-
site traffic is handled and routed by the VPN router. When using an indirectly 
connected slow speed link, all routers should be capable of handling marked 
traffic at a priority to ensure prompt handling of voice traffic. 

Voice packets transmitted by the IPNC have the DSCP field marked to indicate 
it's priority (Diffserv). 

INDeX 2 

INDeX 1 

192.168.42.1 

192.168.42.10 

192.168.124.1 

192.168.124.19 

192.168.124.100

192.168.42.100 

 

Step 1 
Configure PC_1 and PC_2 networking 
as shown 
Site 1 

•  IP Address  =  192.168.42.10 
•  IP Mask 

=  255.255.255.0 

•  Gateway = 

192.168.42.100 

Site 2 

•  IP Address  =  192.168.124.19 
•  IP Mask 

=  255.255.255.0 

•  Gateway = 

192.168.124.100 

 
The IPNC will always present itself as the default router when 
allocating IP parameters via the DHCP. For this reason the 
DHCP server option should not be used as the IPNC is not 
the default router for the networks in this application example. 

INDeX IPNC Cassette Administration Manual 

How Do I? - Page 85 

38DHB0002UKDD – Issue 7 (22/11/02) 

Part 1 IP Connectivity