The Electronic Serial Number Module enables older modems
(PTC-II and PTC-IIe) to be upgraded with PACTOR III mode firmware.
PLEASE NOTE: this is a hardware modification and requires
your modem to be returned to Farallon Electronics
The $119.00 price is
inclusive of the ESN Module (hardware) and labor but does not include the PACTOR
III license, which must be purchased separately. Please contact
Farallon for clarification if needed.
PTC-II and many PTC-IIe modems pre-date the
Electronic Serial Number system that is embedded in current production PTC