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ADSL2/2+ IP DSLAM
7
3.2 ADSL2/2+ IP DSLAM Overview
Using the latest xDSL technology, ADSL2/2+ IP DSLAM offers Internet service
providers a very cost-effective solution for immediate implementation of multiple
services in private and public networks. Currently, according to different port
density, there are 2 models available: 48-port and 24-port. User can deploy
different ADSL2/2+ IP DSLAM to satisfy their application requirements.
ADSL2/2+ IP DSLAM it acts as a standalone IP-based DSLAM, which can
concentrate and manage up to 48/24 ADSL/ADSL2/2+ lines. User can use local
RS-232 CID and/or remote TELNET/SNMP to manage the ADSL2/2+ IP
DSLAM directly.
Since the ATM backbone coverage is not so general in the real broadband
network environment. Instead of traditional DSLAM system provides ATM
uplink interface, the ADSL2/2+ IP DSLAM concentrates 48/24 ports of the ATM
over ADSL traffic which is encapsulated by ADSL CPEs, and maps each user’s
ata encapsulated in ATM-PVC to Ethernet-with/without VLAN-tag packet
(depends on the VLAN was enabled or not for the specified ATM ports), and
then uplink to Telco or ISP directly, User can enable VLAN-PVC mapping
capability for each ADSL/ADSL2/2+ port independently. The ADSL2/2+ IP
DSLAM acts as bridge for the ADSL/ADSL2/2+ ports without enabling the
VLAN-PVC mapping feature. ADSL2/2+ IP DSLAM provides both Ethernet-
VLAN and non-VLAN to ATM-PVC mapping feature and bridge mode for the
ISP to isolate user’s data with security and to provide lots of service
enhancement capabilities. ADSL2/2+ IP DSLAM supports 8 ATM PVC links for
each ADSL/ADSL2/2+ CPE. Following figures are front view of 48-port and 24-
port models.
Figure 1-1 48-port model front view
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