Products affected:
EtherExpress™ Mobile adapters

There are two different modem settings you can change to improve your K56flex connections. These commands can be added to an application's initialization string or sent directly to the modem by using any communications or terminal application. When sending the commands by themselves, start the command with AT (example: AT+MS=V34), and press the Enter key. When adding the command to an application's initialization string, the "AT" should already be present.

Changing Top Speed (+MS Modulation Selection):

You can set the top speed at which your modem attempts to negotiate. The default is K56 (32000 to 56000 bps).

Note: If you routinely try to connect to non-K56flex modems or are having trouble establishing connections, try to lower the "top speed" by changing the +MS setting to +MS=V34 or lower.

+MS=K56	K56flex (32000 to 56000 bps)
+MS=V34	V.34 (2400 - 33600 bps)
+MS=V32B	V.32bis (4800 - 19200 bps)
+MS=V32	V.32 (4800 or 9600 bps)
+MS=V23C	V.23 with constant carrier (1200/75 or 75/1200 bps)
+MS=V22B	V.22bis (2400 bps)
+MS=V22	V.22 (1200 bps)
+MS=V21	V.21 (300 bps)
+MS=B212	Bell 212A (1200 bps)
+MS=B103	Bell 103 (300 bps)

Changing Setting for a Particular Type of Location (S108 - Digital Loss Selection):

The S108 setting can be changed to improve the likelihood of obtaining a K56 connection, depending on your type of location. S108 changes how digital loss is used during a K56flex connection.

Note: If you are connecting at speeds greater than 33.6Kbps, but want to get closer to a top speed of 56Kbps, try changing your S108 setting. Different settings may improve your connection speed, depending on your type of location.

S108=0	0 dB digital loss (with no robbed bit signaling)
S108=1	3 dB digital loss (recommended for use with PBX systems)
S108=2	2 dB digital loss
S108=3	3 dB digital loss (normal)
S108=6	6 dB digital loss (recommended for long distance, default setting)
S108=7	0 dB digital loss

This applies to:

Intel® PRO/100 LAN+Modem56 PC Card Adapter