Configuring the Analog Modem
Introduction
© Virtual Access Ltd.
Page 3 of 14
1.0 Introduction
The Virtual Access Service Managed Gateway (SMG) GW-4000 and GW-5000
product range is optionally fitted with an analog modem. This document
describes the configuration and use of the analog modem.
The modem conforms to ITU V.92 specification, which is an enhancement of
the V.90 modem. The V.92 modem offers two main functions over the V.90
modem:
1. Quick connect: the connection time may be reduced by 50% compared
to the V.90 modem
2. Faster upstream rate: upload speeds may reach 48kbps, compared to
31.2kbps with the V.90 modem. It is also capable of data speeds of up to
56kbps downstream.
The following standards are supported:
Data modem
V.92 / 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