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Subject: Re: ISDN: "modem" or board? (Was: Microsoft "Get ISDN"?)
To: dennis@etinc.com (dennis)
Date: Wed, 20 Mar 96 9:00:35 MET
From: Greg Lehey <lehey.pad@sni.de>
In-Reply-To: <199603192305.SAA04017@etinc.com>; from "dennis" at Mar 19, 96 6:05 pm
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>
>>> From the keyboard of Greg Lehey:
>>
>>>> my ISP only offers ISDN over PPP. He says, if you use HDLC, then we have
>>>> to assign you a permanent IP address.
>>
>> I wanted a class-C network and my ISP is happy that i use HDLC because it
>> is the fastest way and is setup and operated without _any_ problems (in
>> contrast to the Windows weenies using the most hip PPP implementation of
>> the day).
>
> Lets be careful with our terminology.....Sync PPP is run over HDLC.

OK, very careful: "can be run".  And usually is, I agree.  But PPP
adds an extra layer of protocol which is just overhead.  Transparent
IP over HDLC uses HDLC as the link layer.

Greg