I currently have 40/20 bonded DSL service which is over-provisioned to 43.6/21.8, and it has been working great for over a year now. But I just noticed something interesting. According to the modem (I have a Technicolor C2000T), the first line could sync at 79/44, and the second line could run at 67/53, which means the two lines together could do 143 Mbps downstream and 97 Mbps upstream. From my experience, the maximum rates that the modem reports are reasonably accurate, because when I had 40/5 single-pair service several years ago, the modem reported 46/10 as the max rate, and it could do 46/5 with an SNR of 6db with no problems. However, according to CenturyLink, the speeds I can get are 20/5, 40/20, and 120/10. There used to be an option for 60/30, but I don't see that option now. Does anyone know if it is possible to get a faster upload? Here is what the modem reports:
> xdslctl0 info --vectoring
xdslctl0: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 44287 Kbps, Downstream rate = 79245 Kbps
Bearer: 0, Upstream rate = 10911 Kbps, Downstream rate = 21823 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Vectoring state: 3
VCE MAC Address: 1:0:5e:33:44:88
Total error samples Ethernet pkts sent: 12092
Total error samples Ethernet pkts discarded: 0
Total error samples statuses sent: 12092
Total error samples statuses discarded: 0
> xdslctl1 info --vectoring
xdslctl1: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 52947 Kbps, Downstream rate = 67576 Kbps
Bearer: 0, Upstream rate = 10911 Kbps, Downstream rate = 21823 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Vectoring state: 1
VCE MAC Address: 1:0:5e:33:44:88
Total error samples Ethernet pkts sent: 12399
Total error samples Ethernet pkts discarded: 0
Total error samples statuses sent: 12399
Total error samples statuses discarded: 0
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