DSLAM EJ48 is a 48ports IP-based DSLAM with splitter built-in. It terminates all the ATM circuits and converts traffic directly to deliver the most popular broadband IP services.
DSLAM EJ48 offers better bandwidth utilization, Ease of use, as well as the low-cost advantage and provides the least initial investment solution for internet service providers who want to start providing broadband service in a low subscriber density location.
DSLAM EJ48 is compliant with ITU G. 992.5, G. 992.3, G. 992.1, and backwards compatible with early version of ADSL. Its maximum downstream/upstream rate is up to 24/1.2Mbps and maximum reach distance is over 6Km. It is most suitable to provide high speed Internet access on existing copper twisted pair telephone lines. With the highly compact (1U height) and temperature hardened design, simple installation and easy adaptation to local POTS/ISDN splitter requirements, DSLAMEJ48 is an ideal solution for riple-play requirements deployed in indoor and outdoor nclosures.

ADSL2+ Interfaces
48 ADSL/ADSL2/ADSL2+ Ports with splitter built
Supports ANSI T1.413 Issue 2, ITU G. 992.5, G. 992.3, G. 992.1 (G. Dmt), ITU-T G. 992.2 (G. Lite)
Provides optimal rate/reach performance
Rates up to 24.0 Mbps
Distance up to 6.0 Km
Multimode (automatic modulation detection)
Supports packets transmit and receive statistics report
Bandwidth Management control on each port at 32kbps interval
Extended power management capabilities to optimize power consumption for each application

Management
SNMP-based GUI EMS
Local RS-232 CLI
Remote in-band SNMP/TELNET management
Firmware upgradeable via FTP or TFTP
Protocol Support
IGMP snooping/ GMRP/ GVRP/ LACP
SNMP/UDP/IP/MAC/Ethernet

System Features
2 10/100/1000 base-TX ports, one for uplink and another one for cascade
Support up to 8 units to be cascaded
SNMP Management Agent and MIB II
TFTP
BOOTP Client, Boot Server
IP packet size 64 byte to 1522 byte
PPPoE Intermediate Agent
DHCP Relay Agent
8 VCs per ADSL port
Support multiple PVC QoS configuration
128 MAC address per ADSL port
48*128 MAC address

Bridging
1. Ethernet Bridging Broadcast, Flooding/ Dropping.
2. VLAN bridging
A. 512 VLAN support
B. Static VLAN
C. VLAN Stacking
D. VLAN Trunking

Multicast
1. Up to 256 multicast addresses
2. IGMP v1, v2, v3
3. Multicast VLAN mapping
A. Independent VLAN multicast (IVM)
B. Shared VLAN Multicast (SVM)
4. Handle PPPoE Encapsulated IGMP

Security
1. Throttling Control
2. Sticky Bridge Ports
3. MAC Address Access Control List
4. IP Address Access Control List
Inter-Working
1. IPoA to IPoE Tunneling
2. PPPoA to PPPoE inter-working
QoS
1. Input Rate Limiting (IRL) on a per-AAL5 Interface
2. Output Rate Limiting (ORL) on a per ATM-port and Ethernet basis
3. Rate Limiting
Hardware Configuration
2 RJ45 for Uplink and Cascade
2 TELCO-50 connectors for 48-port ADSL/ADSL2/ADSL2+
2 TELCO-50 connectors for phone line
1 dB9 male (Null Modem) for Local Management

Input Power
AC Power Model 90VAC ~ 260 VAC, 50-60 Hz
DC Power Model -40VDC ~ -60 VDC
Power Consumption 90 watts
Operation Parameters
Operating Temperature 0 to 50
Storage Temperature -30--+85
Operating Humidity 5% to 95% non-condensing
Operating Altitude -200ft. To +15, 000ft
Reliability MTBF 140, 000 hrs minimum
Physical Specification
Dimensions 440mm(W) x 380mm(D)in x 44.5mm(H)
Weight 6.5Kg