NOTES ON MODULATION, COMPRESSION, AND SPEED LIMITATION: These
init strings are intended to either be used alone or added to Common
Init Strings to force the modem to connect with a certain protocol. Remember that it is
always best to update drivers and get your phone line checked for noise, rather
than relying on an init string. One of the best ways to get connected to download your
latest drivers is to force v34. Keep the following in mind:
1)Disabling the secondary protocol
of a modem, such as x2 or K56Flex, can make for faster connection time and less modem retraining if v90
fails to negotiate. This is not usually a great way to help with connection issues, but it can in some instances.
2)Disabling compression will often slow
things down on the web, however it can help to speed things up for gaming and clear up dropped connections
with online games as gaming packets can not usually be compressed and compression can sometimes cause connection
issues when playing online games due to this.
3)Using speed limitations can be used in several
ways. The best way to use this is to slow down your normal connection speed a bit so that you get a more stable
connection which can actually often result in data moving faster and less dropped connections. Another reason for
using speed limitations is to force your modem to connect within a certain speed range. You may get failed connections
doing this, but if you can normally get that speed after connecting/disconnecting/reconnecting/etc, then you can redial
until you get within that range, thus getting that speed you are looking for alot faster.
NOTES ON DROPPED CONNECTION HELP: These
init strings are intended to either be used alone or added to the "Common
Init Strings" to help stop dropped connections. Remember that it is
always best to update drivers and get your phone line checked for noise, rather
than relying on an init string. The listed S-registers do the following:
1)s7
increases the connection completion timeout. The timer is started when the modem
finishes dialing and is measured in seconds.
2)s10
increases the lost carrier hang up delay.
3)s25
increases the length of time that the modem will ignore the DTR signal before it
takes actions specified by other portions of the init (usually follows the &Dn
command, which is normally set to disconnect if the DTR signal is lost from
detection).
4)s45
increases the length of time that the modem will wait until going into automatic
standby mode. A value of 0 turns off standby mode completely.
5)s91
sets the transmit attenuation level in -dBm's for public switched telephone
network transmissions (ie. over phone lines).
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