Lucent Technologies 7820-0802-003 manual Sdsl overview, Wire gauge AWG Data transfer rate Distance

Configuring DSL Connections (DSLTNT)

Introduction to DSL technologies

Wire gauge	Upstream rate	Downstream rate	Distance
(AWG)
24	928 Kbps	9248 Kbps	10,000 feet (3.05 km)
26	736 Kbps	6976 Kbps	10,000 feet (3.05 km)

SDSL overview

The SDSL card supports symmetric data transfer rates of 768 Kbps for a distance of up to 12,000 feet (3.7 km) over a single pair of copper wires.

The SDSL-HS data card expands on features offered in the 16-port SDSL card. The SDSL-HS data card provides high port density, with 24 SDSL lines per card. The card supports high-speed symmetric data transfer, with rates up to 1.5 Mbps and distances to 14,000 feet (4.3km), through a single pair of copper wires. At reduced data transfer rates, the card supports distances over 18,000 feet (5.5km). The SDSL-HS data card has an SDSL chip and board layout that differ from the 16-port SDSL card and that provide high speed, multirate capabilities. The 16-port SDSL card cannot be upgraded to the SDSL-HS technology.

The SDSL-HS card is compatible with the DSLPipe products but must be set to 768 Kbps to work properly with the DSLPipe-S, or to 400, 784 or 1168 Kbps to work with the DSLPipe-2S.

SDSL supports Frame Relay and Point-to-Point Protocol (PPP). You configure Frame Relay or

PPPconnections on an SDSL connection in the same way you configure them on a T1 or serial WAN (SWAN) interface.

The SDSL-HS card supports the following symmetric transfer rates:

Wire gauge (AWG)	Data transfer rate	Distance
24	400 Kbps	18,000 feet (5.5 km)
26	400 Kbps	14,500 feet (4.4 km)
24	784 Kbps	18,000 feet (5.5 km)
26	784 Kbps	13,000 feet (3.96 km)
24	1.168 Mbps	16,000 feet (4.88 km)
26	1.168 Mbps	11,000 feet (3.35 km)
24	1.5 Mbps	13,000 feet (3.96 km)
26	1.5 Mbps	10,000 feet (3.05 km)

Note: The data transfer rates presented in the table above are approximations. Actual data transfer rates depend on line loop quality and can vary.

APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide 17-3