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FRA1PR > FBB 24.02.13 13:35l 98 Lines 3897 Bytes #999 (0) @ WW
BID : 13534-FRA1PR
Read: GAST
Subj: GATEWAY AGWPE PROBLEME
Path: DBO595<DOK346<BBS645<DBX233<CB0ESN<FRA1PR
Sent: 130223/1025Z 13534@FRA1PR.FMPACA.FRA.EU.WW [13535] FBB7.01.35 alpha $:135
From: FRA1PR@FRA1PR.FMPACA.FRA.EU.WW
To : FBB@WW
Problem in the WinFBB 7.00E gateway using AGWPE and soundcard
WINFBB 7.00E has a bug when a station enters to the gateway. The callsign
of the incoming station is hit as BBS and in the following calls for
forward of the FBB in the AGWPE ports (Radio and Loopback), it assumes the
same callsign of the user.
In an incoming call to a FBB the station connect usually using the lowest
channel, and the following connections will go increasing the channel.
This is also applied for the incoming forward.
But when our FBB calls to somebody, or an user of another port uses the
gateway, the assignment of channels it is inverse or descending.
See the figure and also thinks you how can solve the inconvenience
calculating the solution based on your own configuration of the BBS.
In the figure we have two defined areas: Radio ports and loopback called
AGWPE ZONE, and a TCPIP ZONE that it corresponds to the TELNET
configurations of the FBB.
Analyzing the figure, we can see clearly that the highest channel in the
AGWPE area is the number 6 that is assigned to the port loop-back, but in
the practical AGWPE it assigns it dynamically to the first incoming
connection of user or partner through the gateway or in the outbound
forward connections.
Here the problem takes place:
CX1XZ connect via TELNET in the port Nr. 6, by default he makes it in the
channel 9.
[PORT 6 (TELNET) - 9 - CX1XZ-0] 12:38 Connect [FBB-7.00-AB1FHMRX$] ¡Helo
JC! Ch. 9 (TELNET) : CX1XZ-0 - Fri 07/11/08 12:38 1:CX2SA BBS>
He goes to the gateway and he chooses the port 2 for VHF:
g 07-Nov 12:38 * GATEWAY MODE * 1 : HF_PRT 2 : VHF_PR 3 : LB_PRT Type the
Port number, H=Help o Q=Quit:2 Using channel 6 in VHF_PR 2:C/D/H/J/K/M/P/
Q=QUIT>
He makes a call at CX5QB for the port 2 VHF and in the monitor we see
correctly:
[2] fm CX1XZ to CX5QB ctl SABM [2] fm CX1XZ to CX5QB ctl SABM [2] fm CX1XZ
to CX5QB ctl SABM [2] fm CX1XZ to CX5QB ctl DISC
CX5BQ don't respond and CX1XZ abandon the BBS. But 10 minutes later FBB
calls at CX3VB in the port 1 of HF.
We see that the callsing of the BBS has been changed from CX2SA for CX1XZ.
[1] fm CX1XZ to CX3VB ctl SABM [1] fm CX1XZ to CX3VB ctl SABM [1] fm CX1XZ
to CX3VB ctl SABM [1] fm CX1XZ to CX3VB ctl DISC
The channel 6 of the AGWPE was used firstly by the user CX1XZ and in the
next instance for WINFBB in the call to CX3VB.
Always the same channel.
To solve the bug I forced the WINFBB so that the call at CX3VB was made in
the channel 4, and the problem was solved.
[1] fm CX2SA to CX3VB ctl SABM [1] fm CX2SA to CX3VB ctl SABM [1] fm CX2SA
to CX3VB ctl SABM [1] fm CX2SA to CX3VB ctl DISC
Use the K command in the forward file script:
The correct value of K command would be obtained according to the
following details:
1) Ports of AGWPE using by FBB
Configure the wanted ports.
2) Quantity of channels for each port
When you configure the channels for each port you don't make it exactly.
You need more free channels, depending on that exposed in the point 3)
3) Quantity of channels for forward at the same time in each FBB port.
I recommend you one channel for each radio port (not telnet) in the
outbound forwarding.
4) Maximum estimated quantity connections of users that could use the
gateway at the SAME TIME in RADIO ports or LOOPBACK.
For example if it is 1, then add 2 more to the total channels because you
need always free channels availables.
To know which channel is NEVER to use with the K command in the forward
file please add all the channels assigned to the entirety AGWPE ports of
FBB.
According to the figure we added 3 of HF + 2 of VHF + 1 of Loopback = 6
Then subtract to the maximum of channels, the maximum users at the same
time + 1, for the example is: 6 - 2 = 4 for such a reason with a K 4, K 3
or K 2 would be solved the inconvenience.
You will experience the good values.
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