mcb@LLL-TIS.ARPA (Michael C. Berch) (07/15/87)
The Pacfic Bell CO (Millbrae, California: 415-697) where I live is
finally installing a new switch, replacing the one installed in 1954.
We will finally get stuff like international direct dial, etc., that
normal people have had for a while now. PacBell sent out the following
letter (excerpted):
"Dear Customer:
As part of our plan to expand and improve telephone service, [...] we
will be making some changes in the central office equipment serving
your area. [...]
We are informing you in advance of this change because there is a
possibility that our new equipment may affect some customer telephone
equipment. [...] If you have [equipment other than a standard
Touch-Tone or rotary-dial telephone] please contact your equipment
vendor prior to our change date.
Your vendor will need to know these facts:
Pacific Bell is installing #5 ESS equipment in the Millbrae
Central Office. Installation is planned for September 19, 1987.
Your vendor can tell you if any adjustments are necessary to make your
equipment compatible with our installation. [...]"
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Hmmm. I didn't know that a 5ESS was not downwardly compatible with
anything you might plug into the network. What sorts of things might
cause problems or be incompatible? Are they talking about older PBXs,
or what?
Michael C. Berch
ARPA: mcb@lll-tis.arpa
UUCP: {ames,ihnp4,lll-crg,lll-lcc,mordor}!lll-tis!mcb