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dtm_bs
Tl Posts:
5

United Kingdom
Posted - 6/27/2000 7:39:05 AM  Show Profile  Email Poster  Edit Message  dtm_bss Homepage
Hi.
I'm having all sorts of trouble with the above modem. Despite the modem manual sayingit is v90 compatible, and my ISP also supporting v90, all i can get is 31,200 kbps.
I have checked so many sotes for updates / patches - some say its updateable but won't update it (the 3com internet update wizard), and others say its already up-to-date.
It's not a phone line / ISP issue since i can dial up at around 48,000 kbps on a laptop using the same phone-line etc.
Any ideas, its driving me mad...

cheers
dan

v.Richard
Tl Posts:
6222

USA
Posted - 7/4/2000 12:34:02 PM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
Texas Instruments doesn't make modems.

USR & some others use TI chipsets.
Some others license firmware from USR; others (Cirrus/Ambient) have written their own.

So, the 1st step would be to determine whether you are using USR-supplied firmware, or something else.
ati3 i7
should tell the story.

Aloha,
Richard

dtm_bs
Tl Posts:
5

United Kingdom
Posted - 7/11/2000 10:11:27 AM  Show Profile  Email Poster  Edit Message  dtm_bss Homepage
Sorry for slow response.
The modem returned this:

ati3 i7
FM-56SA DataFax Voice 12/12 Rev. 5.0.4

Configuration Profile...
Product type CTR21 External
Product ID: 00178600
Options V32bis,V.34+,x2,V.90
Fax Options Class 1/Class 2.0
Line Options Caller ID, Distinctive Ring
Voice Options Speakerphone, TAD
Clock Freq 23.04Mhz
EPROM 256k*16
RAM 32k*16
FLASH date 5/26/99
FLASH rev 5.0.4
DSP date 2/10/98
DSP rev 4.7.30
OK

hope this tells you something.

v.Richard
Tl Posts:
6222

USA
Posted - 7/14/2000 10:33:16 AM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
I think you have a USR/OEM modem. The 00178600 in product ID would make be believe you have an OEM version of USR 1786-00.

Did you check the OEM support section of the 3Com site for upgrade? (There's a link to that section at www.808news.com/56k/links.htm )

However, you may not have a 56k-compatible line. The next step is to check for more than 1 a/d conversion:
www.808news.com/56k/x2-adconversion.htm

Aloha,
Richard

dtm_bs
Tl Posts:
5

United Kingdom
Posted - 7/15/2000 5:12:37 PM  Show Profile  Email Poster  Edit Message  dtm_bss Homepage
The OEM links just send me to the update wizard which, when run, says the modem is already upgraded with the latest code.

I am running an internal modem from the same box which consistently connects @ 42.6 kbps.

any thoughts?
dan

v.Richard
Tl Posts:
6222

USA
Posted - 7/16/2000 12:41:48 PM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
Can you post the results of
ati6i11y11
after a connect?

www.808news.com/56k/diag3com.htm

Aloha,
Richard

dtm_bs
Tl Posts:
5

United Kingdom
Posted - 7/18/2000 7:37:38 AM  Show Profile  Email Poster  Edit Message  dtm_bss Homepage
Richard,
as req'd:
FM-56SA Data60Fax Voice 12/12 Link Diagnostics...

Modulation V.34+
Carrier Freq (Hz) 1829/1920
Symbol Rate 3200/3200
Trellis Code 64S-4D/64S-4D
Nonlinear Encoding ON/ON
Precoding OFF/ON
Shaping ON/ON
Preemphasis (-dB)
Recv/Xmit Level (-dBm) 18/10
Near Echo Loss (dB) 21
Far Echo Loss (dB) 60
Carrier Offset (Hz) -720
Round Trip Delay (msec) 14
Timing Offset (ppm) -1152
SNR (dB) 39
Speed Shifts Up/Down 0/0
Status :


Freq Level (dB)

150 15
300 14
450 14
600 15
750 15
900 15
1050 15
1200 16
1350 16
1500 16
1650 17
1800 17
1950 18
2100 18
2250 18
2400 18
2550 19
2700 19
2850 19
3000 20
3150 20
3300 21
3450 21
3600 23
3750 26
OK

cheers
dan

v.Richard
Tl Posts:
6222

USA
Posted - 7/19/2000 9:32:11 AM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
The y11 freq response would indicate you do NOT have more than 1 a/d conversion and your line should support 56k connects;

However, there may be something unusual or improperly detected by your modem - my guess would be DLC (digital loop carrier)....

I assume you have tried other access #s and cannot get a better connect no matter what # you dial?

Aloha,
Richard

dtm_bs
Tl Posts:
5

United Kingdom
Posted - 7/19/2000 11:46:31 AM  Show Profile  Email Poster  Edit Message  dtm_bss Homepage
yeh - it just won't go > 31,200 but another (internal) modem i also use on the same phone line happily connects @ 42,600 bps?!

dan

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