4.6.5.16 <ANNEX A/B/AB [N=1..4]> Command
This command enables the transmission standard G.991.2 ANNEX A or ANNEX B, where N is
the number of the SHDSL interface. The ANNEX AB automatically selects the transmission
standard.
4.6.5.17 <SETCLOCK list [N=1..4]> Command
This command sets the priority list of clock sources for the SHDSL channel, where N is the number
of the SHDSL channel. The parameter N can be absent for single-channel modems. The possible
clock sources are:
• External sync source: EXT, EXTERNAL
• first E1 channel: 1, E11, E1-1, E1_1
• second E1 channel: 2, E12, E1-2, E1_2
• third and fourth E1 channel
• Nx64 interface: V35
• internal sync source: INT, INTERNAL
• first and second G.703/E0 interface: G703, G7031, G7032, G703-1, G703-2
The external clock source should be either the first one in the priority list or be not used at all. The
next clock sources in the list should be E1 channels and/or Nx64 interface and/or G.703/E0
channels. The internal clock source should be the last one in the priority list. It is even not
necessary to type it in the command.
Two rules: The list of priority clock sources should contain only those E1, Nx64 or E0 channels,
which are used to transmit data over the SHDSL channel. If the SHDSL channel does not transmit
any E1, Nx64 or E0 stream, it is possible to set any of these channel as a reference clock source
or to use the external clock.
4.6.5.18 <MULTIPAIR [2/3/4/2+2/OFF]> Command
This command activates the multipair mode, which allows to merge DSL channels.
Groups of 2, 3 and 4 channels can be merged into the multipair mode. The following variants are
possible:
4.6.5.19 <RESERVE [list]>, <RESERVE [list] [list]> Command
This command allows combining SHDSL channels into groups in order to reserve them. Not more
than 2 groups are possible in a system with 4 SHDSL channels. The reservation groups are called
A and B groups. The parameter sets the list of channel numbers separated by a comma. To
simplify configuration and maintenance of devices, any groups of successive channels can be
reserved. To configure the reserve group, type the following command: