Configuring SHDSL Operating Mode on an ATM Physical Interface

To configure the SHDSL operating mode on the physical ATM interface, include the shdsl-options statement at the [edit interfaces at-pim/0/port] hierarchy level:

Configure the following SHDSL options:

• annex—The type of annex:
  • annex-a—Use for North American SHDSL network implementations.
  • annex-b—Use for European SHDSL network implementations.
• line-rate—The SHDSL line rate. The default for 2-wire mode is auto. The default for 4-wire mode is 4608 Kbps.
• loopback—A loopback connection, local or remote.
  • local—Use to troubleshoot physical PIC errors. A local loopback loops packets, including both data and timing information, back on the local router’s PIM.
  • remote—Use to troubleshoot physical circuit problems between the local router and the remote router. A remote loopback loops packets, including both data and timing information, back on the remote router’s PIC.
• snr-margin— The SHDSL signal-to-noise ratio (SNR) margin, current or snext. The SNR margin is the difference between the desired SNR and the actual SNR.
  • current—Current SNR is the difference between desired SNR and the actual SNR. When configured, the line trains at higher than current noise margin plus SNR threshold.
  • snext—Self-near-end crosstalk (SNEXT) SNR margin line trains the line at higher than SNEXT threshold.