2400 Series ADSL/SHDSL Access Concentrator

2400 Series ADSL / SHDSL Access Concentrator

The 2400 ADSL & 2420 SHDSL access concentrator enables service providers to deploy business services over ADSL/SHDSL whilst maintaining maximum flexibility for connection to the backbone.

The 2400/2420 Operating System supports ATM switching, full IP-routing, bridging and VLAN switching. In addition is has an extended support for IP CoS (Class of Service) and it can initiate and terminate VPN (Virtual Private Network) circuits. Therefore, the 2400/2420 access concentrator can be used for supporting services like VoIP (Voice over IP) and intranet applications.

Apart from a fixed 100Base-T backbone connection, the 2400/2420 access concentrator can accept various modular interfaces with support for PPP, Frame-Relay or ATM.

These interfaces include:

6x E1 with support for IMA (Inverse Multiplexing over ATM), multi-link PPP or multi-link Frame-Relay. The number of E1 lines and the encapsulation scheme effectively used can be selected by configuration (e.g. 4x E1 IMA)
E3* with PPP, Frame-Relay or ATM
STM1* with ATM.
10/100Base-T Ethernet*

Features & Benefits

Small ADSL/SHDSL DSLAM for professional broadband services
1U unit high housing for compact central-office solution
Up to 24 ADSL or SHDSL line pairs per unit with possibility for cascading
Multiple protocol support for flexible migration from Frame relay/ATM to IP transport
Modular interface for maximum flexibility for backbone connectivity

2400 Series ADSL / SHDSL Access Concentrator

2401 LINE INTERFACE
8x Single-pair ADSL line access Coding: compliant to ITU-T G.992.1 (ADSL G.dmt), ITU-T G.992.2 (ADSL G.Lite), ETSI TS 101 388 v1.3.1 Support for ITU-T annex A (POTS) or Annex B (ISDN and POTS) Optional integrated POTS or ISDN splitters Connector: 50 pin telco connector with 8 line pairs Line speeds: Downstream: 32 kbps up to 10592 kbps Upstream: 32 kbps up to 1024 kbps Performance monitoring: compliant G.826 (errored seconds, severely errored seconds, unavailability seconds)
2421 LINE INTERFACE
8x single-pair or 4x two-pair SHDSL line access Coding: TC PAM, compliant to ITU-T G.991.2 (G.SHDSL) and ETSI TS 101524 Connector: 50 pin telco connector with 8 line pairs Line speeds: Single-pair: N x 64 kbps (N = 3 … 36) Two-pair: N x 128 kbps (N = 3 … 36) Handshaking: compliant G.994.1 (automatic speed negotiation) or fixed speed Performance monitoring: compliant G.826 (errored seconds, severely errored seconds, unavailability seconds)
2421 IDEAL MAXIMUM DISTANCE (NOISE-FREE)
1 pair Speed (kbps) 256 512 1024 1536 2048 2304	2 pair Speed (kbps) 512 1024 2048 3072 4096 4608	0.4mm 26AWG (km) 8.2 7.2 5.5 4.0 4.2 4.0	0.5mm 24AWG (km) 11.3 9.9 7.6 5.5 5.8 5.5	0.6mm (km) 16.0 14.0 10.7 7.8 8.2 7.8	0.8mm 20AWG (km) 20.3 17.8 13.6 9.9 10.4 9.9	1.0mm 18AWG (km) 28.5 25.0 19.1 13.9 14.6 13.9	1.2mm (km) 31.6 27.7 21.2 15.4 16.2 15.4

FIXED ETHERNET UPLINK
Connector: RJ45 Encapsulations: IEEE 802.3 (10Mbps Ethernet), IEEE 802.3u (100Mbps Ethernet) Speed: 10/100Mbps auto-sense
MODULAR UPLINK INTERFACE
Multiple E1 Connector: 6x RJ45 Electrical: G.703 Supported layer-2 protocols: Frame-relay, PPP, ATM, multi-link Frame-Relay, multi-link PPP, ATM IMA E3/T3* Connector: BNC Electrical G.703 Speed: 34 Mbps or 45 Mbps Supported layer-2 protocols: Frame-Relay, PPP, ATM	STM1* Connector: SC/PC, dual fibre Wavelength: 1300 nm, multimode Speed: 155 Mbps Supported layer-2 protocols: ATM Ethernet uplink* Connector: RJ45 Encapsulations: IEEE 802.3 (10Mbps Ethernet), IEEE 802.3u (100Mbps Ethernet) Speed: 10/100Mbps auto-sense
ATM ENCAPSULATION
Applicable for DSL interfaces and modular uplink ATM implementation conform I.311, I.321, I.361, I.432 ATM forum UNI 3.1/4.0 PVCs
STATION CLOCK INTERFACE	LOCAL MAINTENANCE INTERFACES
G.703/G.704, 2048 kbps	Local 9-pin sub-D connector

2400 ADSL / SHDSL

Integrated Service Selection Functionality

Campus Network Concentration