| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 4578.1 | Waiting for modem upgrade too... | CHGV04::JANES | Lester Janes DTN 474-5373 | Wed Mar 26 1997 15:25 | 8 |
| I am in the same dilema. I would like to upgrade my Sportster, but
there is no point if there aren't similar modems on the other end.
I inquired at my facility (SCH) about availability of modems greater
than 28.8, and there aren't any plans in the near future for upgrading
existing modems.
Les
|
| 4578.2 | | 60675::nessus.cao.dec.com::Mayne | A wretched hive of scum and villainy | Wed Mar 26 1997 15:32 | 6 |
| I thought DIGITAL was ditching modems and using tunnels to move people to ISPs.
If so, just find an ISP that uses the new modems.
Or isn't it that simple?
PJDM
|
| 4578.3 | | CAMPY::ADEY | Is there a 'Life for Dummies'? | Wed Mar 26 1997 22:39 | 10 |
| re: Note 4578.2 by 60675::nessus.cao.dec.com::Mayne
> I thought DIGITAL was ditching modems and using tunnels to move
> people to ISPs.
Yeah, this makes economic sense for field people whose nearest RAS
server is a few states away, but I haven't heard this happening for
people in the GMA.
Ken....
|
| 4578.4 | | BUSY::SLAB | Don't drink the (toilet) water | Thu Mar 27 1997 01:27 | 7 |
|
Speaking of modems, I downloaded and installed the 33.6 upgrade
for my Megahertz 28.8, and tried it on RAS. The first connect-
ion was at 19.2, compared to 21.6-24 without the upgrade.
Is this normal?
|
| 4578.5 | | CHEFS::16.42.4.27::hattos | I'm back - as a matter of fact | Thu Mar 27 1997 04:19 | 5 |
| Which Megahertz 28.8? If its the PCMCIA variant, I'm sure its NOT upgradable.
I could be wrong but I did look into this when I had one and I'm sure it
wouldn't upgrade.
Stu
|
| 4578.6 | | BUSY::SLAB | Don't get even ... get odd!! | Thu Mar 27 1997 07:13 | 7 |
|
Yes, PCMCIA. XJ4288M.
It did specify mine by name, although the only difference is that
the "M" isn't mentioned. Or maybe it doesn't work for a cellular-
ready modem, which is what I have.
|
| 4578.7 | PBX prevents 56K protocol | STAR::jacobi.zko.dec.com::jacobi | Paul A. Jacobi - OpenVMS Systems Group | Thu Apr 03 1997 14:44 | 7 |
|
I don't think you'll ever see 56K modems supported at Digital. The 56K
protocal cannot be used with the PBXs at most Digital sites.
-Paul
|
| 4578.8 | What do you mean by "protocol"? | BBRDGE::LOVELL | � l'eau; c'est l'heure | Thu Apr 03 1997 15:46 | 8 |
| >> The 56K protocal cannot be used with the PBXs at most Digital sites.
What? There is a protocol at the analog level? Do you mean that the
PBXs don't have the analog voice quality to hold a 56kbps data call or
are you saying that there is some "protocol" rejection? Please
explain.
/Chris/
|
| 4578.9 | | JAMIN::WASSER | John A. Wasser | Thu Apr 03 1997 16:51 | 11 |
| >> The 56K protocal cannot be used with the PBXs at most Digital sites.
> Do you mean that the PBXs don't have the analog voice quality to hold
> a 56kbps data call or are you saying that there is some "protocol"
> rejection?
The 56K modems can only use its 56K capability if it is
talking to a special 56K server. The 56K server must be
connected to a digital (not analog) telephone line. I
assume that the writer was saying that the PBXs we use for
our telephone system do not provide digital telephone lines.
|
| 4578.10 | | axel.zko.dec.com::FOLEY | http://axel.zko.dec.com | Thu Apr 03 1997 17:46 | 7 |
|
Note that most of the GMA will be moving to Nynex Centrix
PBX's in the near future. ZKO being one of the first. I'm
not sure how that affects the 56k issue tho.
mike
|
| 4578.11 | | 16.20.120.202::thomas | The Code Warrior | Thu Apr 03 1997 18:19 | 1 |
| Now that would be nice. ISDN calls within the same Centrix are not metered.
|
| 4578.12 | x2 56k <> 56kbps ISDN | BBRDGE::LOVELL | � l'eau; c'est l'heure | Thu Apr 03 1997 19:12 | 24 |
| > The 56K modems can only use its 56K capability if it is
> talking to a special 56K server. The 56K server must be
> connected to a digital (not analog) telephone line.
I think that you are confusing ISDN (56kbps in the USA and
64kbps/channel in Europe) with the similarly named 56k x2
analog modem technology.
The base note is asking about x2 analog modem server availability.
I concur with one of the earlier replies. You are unlikely to see the
x2 dial-in infrastructure within Digital but this is entirely due to
costs/standards issues and nothing at all to do with PBX restrictions.
There is a big shoot-out going on right now to gain market share
amongst the ISPs for the competing x2 standards. Some of the big
modem companies will probably fund whole ISP capital replacement
programs so that their x2 modem pools act as magnets, selling 10
times as many x2 client modems.
If you are going to pay for a x2 upgrade, get your vendor to recommend
a reliable local ISP who is similarly equipped otherwise the capabiity
will not be very useful to you.
/Chris/
|
| 4578.13 | | QUARK::LIONEL | Free advice is worth every cent | Fri Apr 04 1997 09:37 | 4 |
| No, he's not confusing anything. That's the way X2 works, and indeed
many ISPs and other providers can't take advantage of it.
Steve
|
| 4578.14 | Only the last leg downstream can be analog with X2 | SMURF::PBECK | Who put the bop in the hale-de-bop-de-bop? | Fri Apr 04 1997 13:01 | 7 |
| With the x2 technology, as I understand it, the downstream speed
degrades to 33.6 (standard analog) if there is more than one d/a
conversion in the signal path.
Check out http://x2.usr.com/technology/overview1.html
or http://x2.usr.com/technology/wp.html for more detail.
|
| 4578.15 | | BBRDGE::LOVELL | � l'eau; c'est l'heure | Fri Apr 04 1997 13:26 | 9 |
| OK - I see what you're saying now. It was the use of the word
"protocol" that confused me. As I've been shopping for X2 modems this
week I was looking at the issue entirely from the client side which is
standard analog and doesn't have any special "protocol". I made some
wrong assumptions about the server side. The USR web articles were
preety interesting.
/Chris/
|
| 4578.16 | | PHXS01::HEISER | Maranatha! | Wed May 14 1997 19:05 | 1 |
| the DS700s commonly used on the modem pools might be a bottleneck too.
|