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Groups > comp.sys.mac.system > #54329

Re: interfacing with modem through ATA

From "Geoffrey S. Mendelson" <gsm@mendelson.com>
Newsgroups comp.sys.mac.system
Subject Re: interfacing with modem through ATA
Date 2014-01-04 18:44 +0000
Organization MGT Consulting
Message-ID <slrnlcglfg.5fs.gsm@cable.mendelson.com> (permalink)
References <la9jg0$5md$1@dont-email.me>

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J Burns wrote:
> An ethernet cable connects my modem to my analog telephone adaptor. 
>  From there, an ethernet cable goes to my computer.
>
> Before I had an ATA, I could bring up a modem interface by typing its IP 
> into a browser.  Now I can't do it unless I connect the modem directly 
> to the computer.
>
> If I can talk to remote IPs with the ATA in the line, why can't I talk 
> to my modem?  Is there a way to make it possible?

Because your ATA and modem are also routers. For some reason the ATA
no longer routes packets out to the modem. 

Most likely case is that they overlap IP address ranges, i.e.
the modem uses 192.168.1.xxx as it's LAN side IP range, and
the ATA also uses it.

The best way to fix it IMHO is to plug both the ATA and your computer into
separate ethernet ports on the modem. If it only has one port, you MAY
be able to add a small hub to provide extra ports, but first make sure
the modem will support multiple clients.

The second best way would be to move the ATA's LAN side IP address to 
another network. This would also require changing the DHCP server's address
in the ATA to match.

The ATA has QOS routing in it to make sure your internet usage does not
affect phone calls. If you are a heavy phone user, it is worth having.

A friend of mine found that going through his ATA cut his download
speed to half of what it was without it. He only used his phone for
faxes and a few calls a month, so he got rid of it and put in a landline.

YMMV.

Geoff.


-- 
Geoffrey S. Mendelson,  N3OWJ/4X1GM/KBUH7245/KBUW5379

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Thread

interfacing with modem through ATA J Burns <burns4@nowhere.com> - 2014-01-04 13:21 -0500
  Re: interfacing with modem through ATA "Geoffrey S. Mendelson" <gsm@mendelson.com> - 2014-01-04 18:44 +0000
    Re: interfacing with modem through ATA J Burns <burns4@nowhere.com> - 2014-01-04 14:31 -0500
      Re: interfacing with modem through ATA "Geoffrey S. Mendelson" <gsm@mendelson.com> - 2014-01-05 00:39 +0000
        Re: interfacing with modem through ATA J Burns <burns4@nowhere.com> - 2014-01-04 22:20 -0500
          Re: interfacing with modem through ATA "Geoffrey S. Mendelson" <gsm@mendelson.com> - 2014-01-05 04:49 +0000
            Re: interfacing with modem through ATA J Burns <burns4@nowhere.com> - 2014-01-05 01:29 -0500

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