Conference netcad::hub_mgnt

    Sorry, no.  That configuration is not supported.  Only the DECrepeater
    90T-16 can use the DETAX's AUI port.
    
    We did not qualify that configuration because, as you point out, using
    the AUI on the 90TS means you lose the thinwire, which is the network
    backbone in the string.
    
    							Marc

    Marc, thanks for your response.
    
    When you say it is not supported, what exactly do you mean?
    
    Do you mean that it doesn't actually work?
    
    i.e. that if I use a 90TS with a DETAX, that I cannot transmit or receive
    any signals over the AUI port (when the thinwire is not being used)?
    
    If this is the case, then why?
                                  
    Jeannie
    

    I don't know whether or not it would work, because I haven't tried it.
    My guess is that typically it would function OK.
    
    The actual wiring is in place.  The only reason it might not be
    completely functional is that the 90TS AUI design included isolation 
    transformers on the module itself (none in the rear cover), while the 
    90T-16/DETAX AUI design put the isolation transformers on the rear 
    cover (none on the module).  So if you use the 90TS with the DETAX AUI 
    port, there would be two sets of isolation transformers in the connection.
    This might degrade signals to the point that it wouldn't always work 
    under worst-case conditions.
    
    Since we decided not to support it, we didn't qualify it (DS-134, FCC,
    etc.), which guarantees that it isn't supported.   ;^)
    
    								M

    It does not work.
    
    The firmware does not currently allow the 90TS to configure the
    AUI port in the DETAX.
    
    

    Aha!  So the "not supported" I've been talking about is enforced by
    system firmware.

[Posted by WWW Notes gateway]

	Has there been any change to this support since the last  firmware
	update?

	Seems a shame to have to sell my customer a 16 port and 90FS in
	order for him to get 4 connections in a seperate maintenance building
	(need management).

	Was hoping I could do the following.

	+---+				+---+----+
	|   |				| D |  D |
	|   |+---+		   +---+| E |  E |
	|   ||   >~~~~~~~~~~~~~~~~~<   || T |  T |
	|   |+---+		   +---+| A |  M |
	|   |  ^		     ^  | X |  I |
	|   |  +--FO. transceivers---+  +---+----+
	+---+
	DECswitch 900EE

	I will now have to sell the 90FS and 90T16 in the MultiStack (added
	cost of 90FS but lower cost of 90T16... which is now less $$$s than
	the 90TS). I haven't worked out the numbers, but I imagine the solution
	to be a few $100s more. Drives up the price/managed_port.

	-Larry

    No change so far, but wouldn't it be preferable to use either:
    
    - a DECrepeater 90T-16 with the AUI, in conjunction with a DECagent 90
      (given the recent price cut in the DECagent)
    
    or
    
    - a DECrepeater 90TS standalone, which has an AUI on the rear cover?
    
    Jeannie

	Checked the price of the DECagent and was surprised to see how much
	the price was reduced. I'll use that with the 90T16.

	As for Jeannie last comment, the previous replies stated that it was
	not supported (AUI port on DETMI-SA), and was my question if it 
	would be supported with new firmware.

	-Larry
 

    
    No, Jeannie did not say to order a DETMI-UA (which isn't orderable and
    won't work), but to order a DETMI-AA which is a standalone cover with
    an AUI port, but then the thinwire port become inactive when the AUI is
    used.