Avaya BCM 4.0 Networking Przewodnik Konfiguracji Strona 503

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BCM 4.0 Networking Configuration Guide
Chapter 60
Configuring the WAN resources
A WAN (wide area network) is a geographically dispersed data communication network. The term
WAN distinguishes a broader data communication structure from a local area network (LAN).
Refer to the following topics:
Permanent WAN connection
“Viewing WAN resources” on page 505
“Setting WAN T1 Parameters” on page 508
“PVC Configuration” on page 513
A WAN can be privately owned or rented, but is usually part of public (shared user) networks.
BCM can be equipped with a WAN interface card with two serial synchronous ports (Europe), or a
WAN interface card with one T1 port (with integrated CSU) and one serial synchronous port
(North America). Both ports on the WAN interface card (WAN1 and WAN2) can be active at the
same time. The serial synchronous port supports the following:
North America: V.35
Europe: V.35 (Upper Sync Port) and X.21 (Lower Sync Port)
maximum line speed: 8 Mbit/sec.
BCM provides primary and backup WAN links through dial-up connections using a V.90 or V.92
modem or ISDN BRI/PRI. For information on the modem or ISDN connections, see “Configuring
the Dial-up resources” on page 537. Net Link Manager provides continuous WAN connection
status monitoring. For information about Net Link Manager, see “Configuring Net Link Manager”
on page 567.
Permanent WAN connection
The permanent WAN connection is normally a dedicated network adapter. The permanent link
supports Frame Relay or Point-to-Point protocol (PPP) at the link layer. The link protocol you use
depends on the existing network or on the service you buy from your Internet service provider.
The two ports provided by the WAN interface card can be independently configured to run Frame
Relay or PPP.
Frame Relay
BCM supports frame relay in group mode and direct mode. In group mode, for each physical port
(serial sync or T1 port), there is one IP address for all PVCs (permanent virtual circuits).
The available Data Link Connection Identifier numbers are 16-1007. The maximum number of
PVCs supported is 50.
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