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© Virtual Access 2018
GW6600 Series User manual
Issue: 1.7
Page 178 of 519
17
Dial modem
Virtual Access GW6000V-F Series and GW7630 Series routers are optionally fitted with a
dial (V.90) modem.
The table below shows standards that are supported.
Data modem
V.90
V.34
V.32bis
V.32
V.29
V.22bis
V.22
V.22 Fast Connect
V.23
V.21
Bell212a
Bell103
Data compression
V.44
V.42bis and MNP5
V.42 LAPM and MNP2-4 error correction
Table 67: Dial modem standards
17.1
V.90 modem scenarios
You can use the V.90 modem in several scenarios. The table below gives a brief
description of these scenarios, while the following sections describe how to set up and
configure the modem.
Scenario
Description
As a normal WAN interface
Use the V.90 modem in the same way as other WAN interfaces such
as DSL and ISDN.
As a backup WAN interface
Set up the V.90 modem to come into operation if the primary WAN
interface becomes unusable for some reason.
As an out-of-band management
interface
Use the V.90 modem to access the router management functions by
dialling into the router, for example, using Virtual Access Router.
It is also possible for the router to dial out via the V.90 modem
interface under some conditions.
Table 68: V.90 modem scenarios