Cable Forum - View Single Post - 75 Upstream On Live Cable Network, 100 In Lab

Ignitionnet · 28-02-2010, 01:48

True.

The most likely course of events will probably be Virgin kidnapping another channel from the legacy network and bonding that with the existing one having pumped them both up to 64QAM. Will give each node 30Mbps of upstream capacity, enough for the 5Mbps mooted for the 50Mbps service and for the very occasional 10Mbps upstream mooted for the 100Mbps service.

As I mentioned Virgin have gone as high as 200/50 using the 4 bonded downstreams and 4 bonded 3.2MHz wide upstreams.

Developments with SCDMA look promising and the Virgin BSRs are running a code which I believe allows the use of the RX-48 48 upstream module.

EDIT: Just as a note the S-CDMA picture does feature 3 x 6.4MHz wide upstreams and 2 x 3.2MHz wide upstreams on the pre-upgrade side, a common configuration on the VM network is 4 x 3.2MHz wide upstreams only with 6.4MHz under trial.

28-02-2010, 01:48	#5
Ignitionnet Child Of The Stars Join Date: Jun 2008 Location: On the move Age: 33 Posts: 9,597	Re: 75 Upstream On Live Cable Network, 100 In Lab True. The most likely course of events will probably be Virgin kidnapping another channel from the legacy network and bonding that with the existing one having pumped them both up to 64QAM. Will give each node 30Mbps of upstream capacity, enough for the 5Mbps mooted for the 50Mbps service and for the very occasional 10Mbps upstream mooted for the 100Mbps service. As I mentioned Virgin have gone as high as 200/50 using the 4 bonded downstreams and 4 bonded 3.2MHz wide upstreams. Developments with SCDMA look promising and the Virgin BSRs are running a code which I believe allows the use of the RX-48 48 upstream module. EDIT: Just as a note the S-CDMA picture does feature 3 x 6.4MHz wide upstreams and 2 x 3.2MHz wide upstreams on the pre-upgrade side, a common configuration on the VM network is 4 x 3.2MHz wide upstreams only with 6.4MHz under trial. __________________ One Way Internet - Exasperation, Confusion, Boredom Good without God Last edited by Ignitionnet; 28-02-2010 at 01:56.