Frequently Asked Questions (FAQs)
18
Q30. Some callers say their modems will simply not connect with
the V.90 modems in my CommPlete Server. What can be done
to about this?
A30. Some modems that were designed prior to the introduction of V.90 technology
have a difficult time handshaking past the initial V.90 tone, known as the V.8bis
tone. The CommPlete V.90 modems generate this tone almost immediately after
going off-hook to answer a call.
The first step in resolving this issue is to update your CommPlete modems to
version x.04c or later, where x is 1 for MT5634HD8 modems and 2 for
MT5634HD16 modems. Second, make sure that the users’ modems are at the
latest firmware release. Recent revisions of V.90 server modems are making
some client modems outdated, even modems with V.90 client firmware. Finally,
if the first two suggestions don’t work for some users, contact Technical Support
(see Q62), and talk to one of our CommPlete Server technicians. They will have
information about specific client modems that have difficulty connecting to
CommPlete modems.
Q31. Callers are being disconnected within two minutes of
connecting. How can I minimize the number of users
experiencing this problem?
A31. We refer to these short connections as “quick disconnects.” To minimize these,
update your modems to the latest release of firmware (see Q14). Then, upgrade
the RASExpress software on your RASCard to the latest release of software (see
Q17).
If quick disconnects still occur after upgrading the modem and RAS cards, then
change the modems’ initialization string to “ATZ”. To change the string, telnet to
the RASCard; choose “Configuration of server”; then, choose “Modem Setup.”
Type M; then, select the modem profile that RASExpress is using to initialize the
modems. The initialization strings will appear next.
In addition, if you are using a RADIUS or TACACS+ server for authentication,
make sure that these servers are allowing your users to connect. Most
authentication servers have a logging feature that records the requests of RAS
servers on the network. These logs will tell you which users the authentication
server is not allowing to connect.
Q32. We are seeing unusually slow throughput on the V.90
modems. Is there anything that can be done to improve this?
A32. If you have 2 or more segments populated and operational in your CommPlete
Server, you may need to use the 100BaseT Controller module. You can test this
by turning off all but one of your segments and testing throughput after dialing in.
If the throughput is improved, you should consider getting an MR9600-100 and
attach it to a 100BaseT network.
Also, check the firmware version of your modems (see Q12). Check for a newer
version of modem firmware on the CommPlete Resources web site at
http://www.multitech.com/support/CommPlete.htm. See Q14 for steps on
updating the firmware of your modems.
(199 pages)
(10 pages)
(58 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals