R0106-HP MSR Router Series Interface Command Reference(V7)

267
[Sysname-EFM2/4/0] shdsl mode co
shdsl pam
Use shdsl pam to set the PAM constellation for an EFM interface.
Use undo shdsl pam to restore the default.
Syntax
shdsl pam { 16 | 32 | auto }
undo shdsl pam
Default
An EFM interface automatically selects its PAM.
Views
EFM SHDSL_8WIRE_BIS interface view
Predefined user roles
network-admin
Parameters
16: Specifies the 16-PAM constellation, where the rate range is 192 kbps to 3840 kbps.
32: Specifies the 32-PAM constellation, where the rate range is 768 kbps to 5696 kbps.
auto: Enables automatic PAM constellation selection. If 32 PAM and 16 PAM are supported on both ends,
32 PAM is automatically selected.
Usage guidelines
PAM is a constellation-like coding format of digital lines.
Use this command to configure the digital signal modulation mode for PHY chips.
32 PAM constellation is not supported by interfaces with the G.SHDSL capacity type.
Examples
# Configure the 16-PAM constellation for interface EFM 2/4/0.
<Sysname> system-view
[Sysname] interface efm 2/4/0
[Sysname-EFM2/4/0] shdsl pam 16
Related commands
shdsl capability
shdsl pbo
Use shdsl pbo to set the power backoff (PBO) value.
Use undo shdsl pbo to restore the default.
Syntax
shdsl pbo { value | auto }
undo shdsl pbo