zmodem over telnet

Does anyone know how to get zmodem working over a telnet connection? I
know zmodem is kinda undesireable, but it's either that or kermit, and
kermit's horribly slow.

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Nathan Saper
natedog@well.com (PGP)
nsaper@sprintpcs.com (cell phone, no PGP)
http://www.well.com/user/natedog/
PGP Key ID: 9AD0F382
PGP Key Fingerprint: 743D FE2C 7F2E 7CAE 4A5F 0B19 D855 B205 9AD0 F382