Table of Contents
Advertisement
DPBO Mus
DPBO Frequency Min
DPBO Frequency max
UPBO KL
UPBO KLF
UPBO U0 band Psd A
UPBO U1 band Psd A
UPBO U2 band Psd A
UPBO U3 band Psd A
value. The cable model is in terms of three scalars
xdsl2LConfProfDpboEsCableModelA (DPBOESCMA),
xdsl2LConfProfDpboEsCableModelB (DPBOESCMB), and
xdsl2LConfProfDpboEsCableModelC (DPBOESCMC), that are used to
estimate the frequency dependent loss of E-side cables calculated from the
xdsl2LConfProfDpboEsEL (DPBOESEL) parameter. Possible values shall be
coded as unsigned integers representing a scalar value from -1 (coded as 0) to
1.5 (coded as 640) in steps of 2^-8. All values in the range are valid. This
parameter is used only for G.993.2.
This configuration parameter defines the assumed minimum usable receive
PSD mask (in dBm/Hz) for exchange-based services, used to modify
parameter xdsl2LConfProfDpboFMax (DPBOFMAX) defined below (to
determine the DPBO). It shall be coded as an unsigned integer representing a
PSD mask level from 0 dBm/Hz (coded as 0) to -127.5 dBm/Hz (coded as 255)
in steps of 0.5 dBm/Hz. All values in the range are valid. NOTE - the PSD mask
level is 3.5 dB above the signal PSD level. This parameter is used only for
G.993.2.
This configuration parameter defines the minimum frequency from which the
DPBO shall be applied. It ranges from 0 kHz (coded as 0) to 8832 kHz (coded
as 2048) in steps of 4.3125 kHz. This parameter is used only for G.993.2.
This configuration parameter defines the maximum frequency at which DPBO
may be applied. It ranges from 138 kHz (coded as 32) to 29997.75 kHz (coded
as 6956) in steps of 4.3125 kHz. This parameter is used only for G.993.2.
This configuration parameter defines the electrical length expressed in dB at 1
MHz, kl0, configured by the CO-MIB. The value ranges from 0 (coded as 0) to
128 dB (coded as 1280) in steps of 0.1 dB. This parameter is relevant only if
xdsl2LConfProfUpboKLF is set to 'override (2)', which indicates that this
parameter's value will override the VTUs' determination of the electrical length.
If xdsl2LConfProfUpboKLF is set either to auto (1) or disableUpbo (3), then this
parameter will be ignored.
Defines the upstream power back off force mode.
This configuration parameter defines the 'a' reference parameter of the UPBO
reference PSD used to compute the upstream power back-off for the upstream
band. A UPBO PSD defined for each band shall consist of two parameters [a,
b]. Parameter 'a' (xdsl2LConfProfUpboPsdA) ranges from 40 dBm/Hz (coded
as 4000) to 80.95 dBm/Hz (coded as 8095) in steps of 0.01 dBm/Hz; and
parameter 'b' (xdsl2LConfProfUpboPsdB) ranges from 0 dBm/Hz (coded as 0)
to 40.95 dBm/Hz (coded as 4095) in steps of 0.01 dBm/Hz. The UPBO
reference PSD at the frequency 'f' expressed in MHz shall be equal to
'-a-b(SQRT(f))'. Setting xdsl2LConfProfUpboPsdA to 4000 and
- 67 -
Advertisement
Table of Contents
