[Dxspider-support] User 'ping' sequence?

[John Clayton]

In message <38514.192.168.242.113.1074105687.squirrel at www.tobit.co.uk>, 
Dirk Koopman <djk at tobit.co.uk> writes
>> I apoligize for not being more clear in my first posting. This appears
>> to only  happen on on the RF ports. But it's not a PC51 or other cluster
>> protocol query.  It's just a simple ax25 data [RR] frame, here's an
>> example as monitored via  AGWTerminal:
>>
>>  1:Fm W4QB To HSVDX4-2 <RR P/F R1 >[18:22:06]
>>  1:Fm HSVDX4-2 To W4QB <RR P/F R1 >[18:22:07]
>>  2:Fm W4QB To N4NM <RR P/F R0 >[18:22:10]
>>  2:Fm N4NM To W4QB <RR P/F R0 >[18:22:12]
>>
>> NOTE: Port 1 is LAN backbone node-to-node, Port 2 is a user channel.
>>
>> It appears to be a handshake of some sort, like "hey, are you still
>> there?"  query. This is what I meant by 'ping'. This happens with every
>> RF connected  station whether user or node, and at approximately 1
>> minute intervals.
>
>This is normal AX25 traffic. This is what keeps connections alive. AFAIK
>there is nothing new in this
>
>Dirk
>
>
Dirk, in the old G8BPQ node software, John used to sent two 'nulls' 
instead of a prompt - would this be a better solution in that I assume 
that the user doesn't 'see' them - it is only the TNC which reacts?

John, G4PDQ.
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