Thanks, James and Peter for your suggestion on using the max3100, it looks
like it will do just fine.  I now need to find a couple of other SPI
devices... First, does anyone know of a DTMF encoder/decoder that works with
SPI?  I can find a lot of DTMF encoder only devices, but I've had no joy on
a combined encoder/decoder.  Second, I'm also looking for an SPI 256k x 8
EEPROM, uchip's largest SPI EEPROM is just 64k, but they do have a 256k i2c
EEPROM; does anyone know where I can find a 256k SPI EEPROM?

+++++++++++++++++++++++++++++++++++++++
++      Dan Tye
++      Chief Engineer
++      Tel-Tron Technologies Corporation
++      220 Fentress Boulevard
++      Daytona Beach, FL 32114
++      Phone: 904-255-1921    Fax: 904-258-3782
+++++++++++++++++++++++++++++++++++++++