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IP Office Product Description
IP Office 4.2
© 2008 AVAYA All rights reserved.
Page 164
Issue 18.b.- (08 July 2008)
Data Networking Features
Integral 10/100 Mbit Layer 2 Ethernet Switch
· IP Office - Small Office Edition and IP406 V2 Only.
All the IP Office - Small Office Edition platforms provide a four port Layer 2 Ethernet Switch. The IP406 V2
provides an 8 port Layer 2 Ethernet switch.
Each port auto-senses its operational speed, 10Mbps or 100Mbps. In addition to the four port layer 2 switch,
IP Office - Small Office Edition has a fifth Ethernet port (labeled WAN) with its own IP Address (LAN2) intended
for connecting to external xDSL or Cable Modems. This fifth port is a Layer 3 switch to the other four ports.
Integral 10/100 Mbit Layer 3 Ethernet Switch
Layer 3 switching is particularly useful in situations where it is desirable to have a ‘trusted’ and ‘unsecured’
network, where the ‘unsecured’ network is uncontrolled and carries public traffic on it.
It is possible to set up a firewall between two LAN segments using the IP Office layer 3 switch. Small Office
Edition offers a firewall between its four port Layer 2 Ethernet switch and its Layer 3 Ethernet WAN port, while
IP412 and IP500 support a two-port Layer 3 Ethernet switch with the firewall between them. Both of these
switched ports have their own IP addresses (LAN1 and LAN2) and in order for traffic to pass from one port to
the other, a route is configured in the system’s routing tables.
From Release 4.1 onwards, port 8 of the IP406 V2 Ethernet Switch can optionally be configured as LAN2.
DHCP Server
IP Office can manage your IP Network for you through its integral DHCP Server. IP Office can be configured to
hold a pool of IP addresses for users on the Local Area Network. When a user powers up their PC, the system
will allocate them an IP address for the duration of their session. The DHCP server also provides the user's PC
with the address of the Domain Name Service (DNS) server and the Windows Name Service (WINS) server.
Alternatively, for customers who have a separate DHCP Server, IP Office can be configured to obtain its
address from that DHCP server or be set with its own static IP address. Both IP Office - Small Office Edition
and IP412 have two independent DHCP servers, one dedicated to each of the Layer 3 switched LANs.
Leased Line Support
All IP Office systems are capable of connecting to leased line services.
On IP400 systems X.21, V.35 and V.24 are supported via the WAN port on the back of the control unit. The
X.21, V35 and V24 are externally clocked and can operate at any speed up to and including 2M. Additional
WAN ports can be added using the WAN3 10/100 external expansion module. For the Small Office Edition an
optional WAN port card can be added. This type of WAN connection is not supported on IP500 systems.
On all systems including IP500, WAN services are supported over E1/T1 PRI trunks and BRI trunks. E1/T1
trunks can be configured to operate in a fractional mode for 'point to multi-point' applications i.e. a single 2M
interface could be treated as 3 x 512K and 8 x 64K going to 11 different locations. When using T1 as a Leased
Line it is possible to use the same circuit for switched circuit services. Not all types of leased line are available
in all territories, check for availability.
Dial-Up Circuit Support
Where the amount of traffic does not justify the cost of a dedicated leased line, the system can provide data
connectivity via ISDN dial-up circuits using its E1/T1 or Basic Rate trunks. Where data speeds greater than a
single channel are required (64K/56K), additional channels can be added to the call as and when they are
needed.
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