On 6-Sep-98, I tested 4 V.90 modems from 2 different lines
(served by different GTE CO's- central offices), calling 4 types of V.90
servers.
The modems tested were:
3Com/USR v90 (model 1786-02 firmware 4.9.1)
Lucent LT WinModem (firmware 5.20)
Hayes/Accura 4924 Lucent PCMCIA (firmware 52198)
Zoom 2949 (firmware 2.081)
Servers called include:
3Com TCH (Total Control Hardware)
Ascend TNT
Livingston PM3 (still only beta v90 code for these servers)
Bay Networks
Line 1 is my home line, served by GTE's remote GTD5 office; Line 2 is a
business served by GTE's switching GTD5 office. Here are the results. You may
have different results as the telco routing on 56k modem calls can affect
performance:
* - KFlex must be disabled (s38=0) to get a V.90 connection.
** - The Hayes/Lucent PCMCIA will "connect" at 48k+ rates, but with no
error correction, so as to make the connection worthless; forcing error
correction ( \N4) results in NO CARRIER. It will connect V.90 only to ILH - the
ISP located in a GTD5 office, not the vast majority of ISPs served by
DMS100 office. I haven't tested KFlex connects as the customer uses a v90/x2
provider.
*** - The Zoom sucks big time. It may pretend to be connected at times, but no
data can pass; other times it doesn't even pretend - it just gives NO CARRIER.
Once in a while, it might actually connect and pass data for some period of
time, and some >0bps rate. It will do 34-38k KFlex connects to the
Livingston & Ascend servers.
**** - ILH and Hawaii.net have access from a GTD5 CO; all the other ISPs are
served from a DMS100 office.
