1993-08-12 - Secure voice software issues

Header Data

From: karn@qualcomm.com (Phil Karn)
To: shipley@tfs.COM
Message Hash: b9805caa0bd7154ae7b8393a54b661b5768d9d87f00f522ece7262b72f88b9f5
Message ID: <9308122309.AA13742@servo>
Reply To: <9308122154.AA18473@edev0.tfs.com.TFS>
UTC Datetime: 1993-08-12 23:12:57 UTC
Raw Date: Thu, 12 Aug 93 16:12:57 PDT

Raw message

From: karn@qualcomm.com (Phil Karn)
Date: Thu, 12 Aug 93 16:12:57 PDT
To: shipley@tfs.COM
Subject: Secure voice software issues
In-Reply-To: <9308122154.AA18473@edev0.tfs.com.TFS>
Message-ID: <9308122309.AA13742@servo>
MIME-Version: 1.0
Content-Type: text/plain


>do not use error correction or compression.  (they will slow you down)
>and tcp does it's own error correction.  as for 160ms round trip times
>that is acceptable for slip.

Well, in theory turning off V.42bis entirely should get rid of these
delays, but in my exerience with Motorola Codex 3260 modems, it doesn't.
Don't know why.

Also, if you turn off LAPM you are back to sending start/stop bits again.

Phil

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• 1993-08-12 (Thu, 12 Aug 93 13:58:13 PDT) - Re: Secure voice software issues - smb@research.att.com
  • 1993-08-12 (Thu, 12 Aug 93 14:58:13 PDT) - Re: Secure voice software issues - Peter Shipley <shipley@tfs.COM>
    • 1993-08-12 (Thu, 12 Aug 93 16:12:57 PDT) - Secure voice software issues - karn@qualcomm.com (Phil Karn)
    • 1993-08-12 (Thu, 12 Aug 93 16:38:15 PDT) - Secure voice software issues - karn@qualcomm.com (Phil Karn)