Chapter
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2-3
2.1.2.2 Related ATM Standards
The ATM standards ZXDSL 9210 complies with are shown in Table B.2-1 in Appendix
B.
2.1.2.3 Related Ethernet/L2 STANDARDS
The Ethernet/L2 standards ZXDSL 9210 complies with are shown in Table B.3-1 in
Appendix B.
2.1.2.4 National Standards Applicable to the Product
The national standards ZXDSL 9210 complies with are shown in Table B.4-1 in
Appendix B.
2.1.3 Functions
2.1.3.1 XDSL Services
1. ADSL
services
ZXDSL 9210 (V3.1) adopts DMT modulation and asymmetrical data
transmission. The ADSL technology is a modulation/demodulation technology
related to transmission of data signals via copper twisted pairs. According to the
ADSL standards, ZXDSL 9210 (V3.1) achieves a downlink rate up to 8.192
Mbit/s, and an uplink rate of up to 64 kbit/s. Without adding any copper cables
or affecting original telephone services, it implements high-speed data access
over existing subscriber loops. Besides, it provides users with high-speed
Internet access, VOD, and videophone services.
2. VDSL
service
ZXDSL 9210 (V3.1) supports VDSL services. The FDM and QAM technologies
are combined to transmit voice signals and high-speed digital signals over an
ordinary copper twisted pair. With both uplink and downlink rates as 10M, and
the line width as 0.4 mm, the maximum transmission distance amounts to 1 km.
2.1.3.2 Ethernet Access
The Ethernet access of the ZXDSL 9210 (V3.1) system is implemented by means of
Ethernet uplink board, uplink subboard, embedded BAS or 1000M Ethernet optical
interface. The ZXDSL 9210 (V3.1) system provides 10/100M Ethernet
