Customer has asked us some questions that why VDSL spectrum at CO side and CPE side are different . They have observed some DS signal at frequency range 12M~14M, but it is not observed at CPE side.
that the VDSL2 other than band plan 997, there are 997E17and 997E30 specific for the Profile 17a and 30a respectively. The followings are the band interval and below are the band edges as reference:
Band interval: US0 DS1 US1 DS2 US2 DS3 US3 DS4 US4
997: 25 138(276) 3000 5100 7050 12000 N/A N/A N/A N/A
997E17: N/A 138 3000 5100 7050 12000 14000 17664 N/A N/A
997E30: N/A 138 3000 5100 7050 12000 14000 19500 27000 30000
It should be noted that other than the US1, US2, DS1, DS2 we expected previously, there are DS3, DS4 and US3, US4 for the Band Plan 997E17and 997E30.For we are setting Profile 17a and Band Plan 997E17, there would be DS3 we observed.We informed customer and the case was cleared.