Ascend Archive
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Re: (ASCEND) no connect with older modems after upgrade
At 04:58 PM 8/25/97 MEZ-1MESZ, Bernd Wagener wrote:
>Hello,
>last friday we upgraded our Max4000 with 3 K56Flex cards with
>5.0Ap20.
>Today we got some complaints from our users : a modem-connect was not
>possible. I boiled down the complaints : only users with older or
>no-name 14400 modems have the problem. The I tested wit such a modem
>an was surprised. If th Max goes off hook, then he sends a short
>beep an begins after a silent period of one second ore more to send
>his normal signals. The short beep at the beginning seems to disturb
>the modems an no connection can be established.
You could tell the users to put a pause after the dial-string (by adding
some commas after the number) that would tell the modem to *wait* a couple
of seconds after "connecting" before it starts training....that would bypass
the "beep" - or V.8bis tone - at the start.
>Befor the upgrade we never had this strange behavior.
This V.8bis tone was added to the K56Flex negotiations to interoperate with
Lucent modems. When the K56Flex world was Rockwell/Rockwell it was not
needed, but would not work with non_Rockwell K56 modems....
>Can somebody help me? We are in a university an I cannot say to all
>the students : "Please buy a better modem!"
...maybe their grants could be increased as a result ;)
Kevin
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