I have tried over a dozen different Terminal servers with the KXTD1232 and
found only one to work... to a limited extent (will only connect on the
second try). The Lantronix MSS-VIA with their previous port emulator
software not their current (DeviceComm Manager build 1.07).

The problem is you have to toggle the handshake lines to switch from SMDR to
Programming mode. Most Terminal servers control the handshake lines locally.
BUT what you need is one that look like a UART at the end of the network
which can have it's handshake lines controlled by the PC as if it where in
the PC.

There is an RFC that partially address this issue RFC2217.

I will help someone if they want to work on this problem. Provide RS-232
Data analyzer or any of the products listed below.

We have tried:
Lantronix: MSS-100, MSS-VIA, UDS-10, ETS16, ETS16PR, ETS32PR, MSS1, LRS2
Digiboard: Portserver II, Port server TS, Etherlite
Stallion
Xylogics
Blackbox

Another problem is I have never seen the schematic for the Panasonic serial
port. YEAH, YEAH I have seen a hundred post's for the serial cable -BUT-
which are in and which are out and which are actually active (actually
toggle or are sensed by the USART in the switch). NOT in the documentation.

One of the posts said they were successful with no MARK parity set. This is
common with 8 bit schemes. Takes more processing power to handle that
problem. In particular that is why a Lantronix MSS-VIA sort of works and
their MSS-100 won't work at all.

I have spent HOURS with the engineers at Digiboard and Lantronix trying to
educate them to problems with their products not meeting RFC 2217 or it's
goals. The goal is to have a remote USART behave just like it is your PC.

The other problem is some their human interfaces are actually worse than the
Panasonic DOS programming software if you can believe that. The Lantronix
later Web based software is pretty nice. -BUT- can be a security problem so
be careful if there isn't a firewall.

Something like the MSS-VIA with Panasonic would be nice.
2 serial ports.. 1 for Switch and 1 for Voice mail
1 PCMCIA slot for 802.11B -AND 10/100 hardwired.
I have successfully used Cisco aironet 340 cards with the MSS-Via and the
Panasonic 1232.

Any takers??



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