OneAccess 1645 - Line Interface Specifications

1645 Chapter 4
User manual Technical specifications
35
4.1 SHDSL line specifications
• Single pair, dual pair, 4 pair line access
• Connector: RJ11
• Impedance: 135
Ω
• Cable to be used: CAT5E twisted pair
• Coding: TCPAM, compliant to ITU-T G.991.2; G.SHDSL, and G.SHDSL.bis via TCPAM-16 and
TCPAM-32
• Line speeds:
- Single pair: 192 … 5696 in steps of 64kbps
- Two pair: 384 … 11392 in steps of 128kbps
- Four pair: 768 … 22784 in steps of 256kbps
• Handshaking: compliant G.994.1 (automatic speed negotiation) or fixed speed
• Performance monitoring: compliant G.826 (errored seconds, severely errored seconds, unavailability
seconds)
The line connector lay-out
The following table shows the connector layout of the RJ11 line connector for SHDSL line pair 1-2:
The following table shows the connector layout of the RJ11 line connector for SHDSL line pair 3-4:
Pin Signal Figure
2 line 2
3 line 1
4 line 1
5 line 2
Pin Signal Figure
2 line 4
3 line 3
4 line 3
5 line 4