16th Sep. 1986


Dear Ian,

                       System 509


Could you please build me a T2R7 system for machine #509 with the following
changes:-

1.  Line 9 to be a DCE.

2.  Line 3 to be a DTE.

3.  Addresses:-

   Lau 01   1-15000999
            15006000-15999999
            17000000-99999999

   Lau 02   15001000-15005999

   Lau 03   16000000-16000999
            16002000-16999999

   Lau 04   16001004
   Lau 05   16001005
      etc to
   Lau 20   16001020

4.  Line Redirections:-

   Lau 01 to redirect to Lau 03
   Lau 02 to redirect to Lau 01
   Lau 03 to redirect to Lau 01

   No other redircetions.

5.  I also wish to integrate system 509 with 669 and 670 and would like the
    trunks set up on this system so that when I later change systems 669 then
    670 they will work as a 3 switch system.

    Lau 01 is the trunk line connecting to Lau 01 on System 669
    Lau 03 is the trunk line connecting to Lau 03 on System 670

I hope this is all clear enough for you.

                            Yours sincerely