Nortel BSR252, Configuration - Basics

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Chapter 4 User Notes 79
Nortel Business Secure Router 252 Configuration — Basics
Preventing heavy data traffic from impacting telephone calls
To ensure voice quality during heavy data traffic, bandwidth needs to be reserved
for voice traffic. Bandwidth needs to be reserved on both the WAN side, and the
LAN side.
1
On BANDWIDTH MANAGEMENT / Summary, activate WAN- and
LAN-side bandwidth management.
2
On BANDWIDTH MANAGEMENT / Class Setup, add a WAN subclass,
and reserve sufficient bandwidth based on the number of telephones, for
Protocol ID 17 (UDP Traffic).
The amount of bandwidth should be based on a reasonable peak number of
simultaneous calls, and the data rate needed by the IP telephony CODECs.
Refer to the BCM IP Telephony (or other call server) documentation for
calculation details.
3
Set up a similar LAN subclass.
Setting Up a Remote Office with a UNIStim IP Telephone
For a remote office with a PC, and a UNIStim IP telephone behind a Business
Secure Router, Client Emulation is the recommended method to connect to the
main office.
1 At the main office Contivity Client Server, establish two user accounts - one
for the telephone, and one for the PC.
2 On the remote office Business Secure Router, do the following:
Under WAN / WAN IP, ensure that Network Address Translation is set to
SUA Only (default). Also ensure that the Gateway IP address is set (not
0.0.0.0).
Under VPN / Summary, create an entry for the IP telephone client tunnel.
(Contivity Client, Active, Keep Alive). Fill in the IP address of the Contivity
Client Server, and the name and password of the telephone set user account.
Under VPN / Global Setting, enable Exclusive Mode, and fill in the MAC
address of the telephone set.