Tahoe 684 - G.shdsl+ modem with Ethernet interface

Tahoe 684
8-wire G.shdsl+ modem with Ethernet interface

Description

8-wire G.shdsl+ modem with Ethernet interface

Tahoe 684 is a new member of the successful Tahoe G.shdsl+ family unfolding unprecedented possibilities for the copper leased lines. It achieves throughputs of 22 Mbps (symmetrical) on the distance of a few kilometers - faster and farther than any other modem technology.

tahoe684_appl_en

Apart from typical G.shdsl modulations it supports TCPAM-32 coding - much more efficient than the standard TCPAM-16, giving higher throughputs and higher reach.

Ease of use

Build-in LCD and keyboard allows easy configuration even without connecting to PC. Telnet, ssh or serial console management may be used for more detailed setup.

Reliability

Stability and reliability is provided by multiple hardware and software watchdogs that monitor system status. Solid metal enclosure and rugged design ensures high mechanical durability and long lifespan.

Technical data

Throughput	up to 5.7 Mbps per port up to 22.8 Mbps on a bundled 8-wire line
Standards	G.shdsl, conforms to ITU G.991.2
Interface	Ethernet 10/100 Base-T
Modulation	TCPAM-32 up to 30% higher reach in comparison to HDSL
Features	TCP/IP router NAT/masquerade firewall built-in LCD and keyboard for easy configuration telnet and SSH management SNMP management serial console management DHCP/BOOTP Server DHCP/BOOTP Relay Agent (relaying of the DHCP/BOOTP requests to a central server) firmware upgrade using TFTP managed or unmanaged bridge functionality logging through syslog 802.1q VLAN support inside temperature measurement automatic traffic balancing among four DSL lines individual throughput settings for each line (in case of quality differences between the lines) automatic fall back to 6-, 4- or 2-wire transmission in case of line failure
Processor	Freescale PowerPC 100MHz
Memory	4MB SDRAM
Performance	up to 15,000 packets per second
Network protocols	TCP, IP, UDP, ICMP, TFTP, SNMP, DHCP, BOOTP, PPP, Frame Relay, HDLC, Cisco® HDLC, IEEE 802.1q
WAN encapsulation	ATM AAL5
Dimensions	200 mm (width) x 130 mm (depth) x 45 mm (height)
Power supply	15-30V, 700-350 mA, 11W (110-230V/50-60Hz power supply included)

Reach

Values below were measured on a test line of 0.5mm wire diameter. They depend on an actual line and thus are not guaranteed. They may be different - higher or lower - in an individual case.

Throughput	Reach on 8 wires	Reach on 4 wires	Reach on 2 wires
22784 kbps	2500 m	-	-
16896 kbps	2900 m	-	-
14336 kbps	3200 m	-	-
11392 kbps	3600 m	2500 m	-
6272 kbps	4200 m	3500 m	-
5696 kbps	4700 m	3600 m	2500 m
3072 kbps	5900 m	4100 m	3500 m
2048 kbps	6900 m	5000 m	3900 m
1024 kbps	7500 m	6900 m	5000 m

22784 kb/s

Additional information

User manual update