IES-1000 User’s Guide

Chapter 6

G.SHDSL Commands

The G.SHDSL (G.991.2 Single-pair High-speed Digital Subscriber Line) subsystem allows you to configure and monitor the G.SHDSL ports on the SAM1008 network module.

6.1G.SHDSL Standards

The IES-1000 supports both G.991.2 and the G.hs standards.

Table 6-1 Data Rates of the SAM1008’s SHDSL Ports

STANDARD

MAXIMUM UPSTREAM AND

MINIMUM UPSTREAM AND

 

DOWNSTREAM RATE

DOWNSTREAM RATE

 

 

 

G.991.2

2304 Kbps

192 Kbps

 

 

 

6.2Profiles

A profile is a table that contains a list of pre-configured SHDSL settings. Each G.SHDSL port has one (and only one) profile assigned to it at any given time. The profile defines the maximum and minimum transfer rates, of all the G.SHDSL ports that have this profile. You can configure multiple profiles, including profiles for troubleshooting.

Profiles allow you to configure G.SHDSL ports efficiently. You can configure all of the G.SHDSL ports with the same profile by modifying the profile, thus removing the need to configure the G.SHDSL ports one-by-one. You can also change an individual G.SHDSL port by assigning it a different profile.

For example, you could set up different profiles for different kinds of accounts (say economy, standard and premium). Assign the appropriate profile to a G.SHDSL port and it takes care of a large part of the port’s configuration. You still get to individually enable or disable each port, as well as configure its encapsulation type, multiplexing mode, VPI and VCI. See later in this chapter for how to configure profiles.

6.3Configured Versus Actual Speed

You configure the maximum and minimum speed of individual G.SHDSL ports using the set profile command. However, due to noise and other factors on the line, the actual speed may not reach the maximum that you specify.

Even though you can specify arbitrary numbers in the set profile command, the actual speed is always a multiple of 64 Kbps. If you enter a speed that is not a multiple of 64 Kbps, the actual speed will be the next lower multiple of 64Kbps. For instance, if you specify 600 Kbps for a port, the actual speed for that port will not exceed 576 Kbps, and if you specify 660 Kbps, the actual speed will not be over 640Kbps.

Note that when you configure a G.SHDSL port, the upstream and downstream speeds are the same. The list port command displays the configured parameters and actual speed of a G.SHDSL port.

G.SHDSL Commands

6-1