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Trunk Interface 58
Model 3124 User Manual B • Specifications
Trunk Interface
• Support IEEE 802.1X authentication for trunk interface.
• Support RJ45 connectors for uplink port.
• Electrical interface:
- Support IEEE 802.3 10/100/1000 Base-T auto-sensing GbE.
- Support auto-adaptive between full-duplex and half-duplex operation modes for 10 and 100 Mbpsopera-
tion speed on a per trunk port basis. The system only supports full-duplex mode for 1000 Mbps.
Line Interface
• Support a total of 24/48 subscriber lines and provisioning of the operation modes (ADSL/2/2+) on a per
port basis.
• Support ADSL operation modes that comply with ANSI T1.413, G.992.1 Annex A (POTS) and B
(ISDN), and G.992.2 G.lite.
• Support ADSL2 operation modes that comply with G.992.3 Annex A (POTS) and B (ISDN) respectively.
• Support ADSL2+ operation modes that comply with G.992.5 Annex A (POTS), B (ISDN), L (REDSL2+),
and M (extended upstream bandwidth over POTS) respectively.
• Support data rate:
- up to 25 Mbit/s downstream, 1.5 Mbit/s upstream (G.992.5),
- up to 3 Mbit/s upstream (Annex M), at integer multiples of 4 kbit/s for ADSL/ADSL2 and 8 kbit/s for
ADSL2+.
• Handshake procedure of each DMT ATU-C ADSLx circuit complies with ITU-T G.994.1.
• Support EOC and Overhead Channel Access defined in ITU-T G.992.5 and G.997.1
• Support ATM Transmission Convergence function defined in ITU-T G.992.5 Annex K
• Spectral Mask of transmitter signal complies with the PSD specified in ITU-T G.992.5 Annex A
• Support capability for the controllable spectrum bound defined in ITU-T G.992.5
• Support latency path function as defined in ITU-T G.992.5
• Support the capability of selectable pilot subcarrier for downstream direction specified in ITU-T G.992.5
• Physical layer management of each DMT xDSL circuit complies with ITU-T G.997.1.
• DMT xDSL subscriber interfaces support the following functions:
- Upstream and downstream non-overlapped mode
- Scrambling functionality
- FEC functionality
- Trellis coding
- Bit-swap