Speed 10mb, 20mb how about 2mb? - Page 2

jb66 · 26-07-2010, 19:24

Quote:

Originally Posted by musicbravo

AFAIK - They can see your levels from their end, even if they can't, your levels are far too high. Power level should be between -3 and +3 ideally but this could be as high as 8 or 9. What modem do you have. Please dexcribe it or give the model number from the underside of the modem. (Think I have a theory)

-3 and +7 in my area.

Its too high but AGAIN not the cause of your slow speeds. I can plug my modem in at the isolator in living room before the splitter and get a full 20mb with 12db power level

pip08456 · 26-07-2010, 21:11

Quote:

Originally Posted by jb66

-3 and +7 in my area.

Its too high but AGAIN not the cause of your slow speeds. I can plug my modem in at the isolator in living room before the splitter and get a full 20mb with 12db power level

If your modulation is 256QAM then the level is within spec for you. The OP's mod is 64QAM which would require the lower power level.

As per Igni's sticky "Both Telewest and ntl are now using the more efficient, but demanding 256QAM modulation in some areas. This gives more bandwidth but required better networks. For this modulation the recommended power range is -6dBmV to +15dBmV with a recommended SNR of 33dB."

websi7 · 27-07-2010, 03:43

The modem is a CISCO 2100 p/n 4015875

http://www.cisco.com/en/US/prod/coll...76/7007410.pdf

and user guide http://www.cisco.com/web/consumer/su...s2/4005527.pdf

musicbravo · 27-07-2010, 09:04

When did you join Virgin? Never seen one of those before in my life? Maybe Virgin staff on forum could confirm ifthis is an old/new/dodgy model?

---------- Post added at 10:04 ---------- Previous post was at 09:58 ----------

Oh, just thought, is this one of the old webstars?

---------- Post added at 10:04 ---------- Previous post was at 10:04 ----------

Oh, just thought, is this one of the old webstars?

websi7 · 27-07-2010, 12:35

I joined VM within last 2 months and the modem and router were both supplied by them.

Should I buy a different modem? is so what?

musicbravo · 27-07-2010, 15:53

No, you should get an engineer out. I was quite sure Webstars were very old models and only available off sites such as E-Bay (abeit illegally). Somebody might be able to correct me, but I thought the virgin 255/256 series were still the norm. Being a genuine customer as I am sure you are, why would you want to buy a new modem. Genuine customers get free support/replacments providing there is a fault.

caph · 27-07-2010, 16:28

Looking at the official VM Community website it looks like quite a few new customers are getting these Webstars. I'd be interested to hear from someone from VM in the know about the switch from Ambit to Cisco.

jb66 · 27-07-2010, 21:39

I'll correct you: The new ciscos are more common than the ambits at the moment (for me anyway), Engineers have a mix of the two. Im not sure what you mean by a switch, i've been getting ciscos/webstars on a regular basis since starting with the company.