I had (still have) a Hayes Micromodem II ... I believe it had the command set. You can see the manual here: https://apple2online.com/web_documents/hayes_micromodem_ii_owner__s_guide.pd... On Thursday, January 30, 2020, 8:16:38 AM EST, Adam Michlin via vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> wrote: Hi Everyone, We're building a museum exhbit on historical modems. RIght now we have: Acoustic USR 300 bps USR Dual Standard Courier 14.4kbps (Sysop badged) Telebit T2500 Hayes 9600 bps USR Sportster V.92 The idea is feature the beginnings (acoustic) and ends (USR V.92) and several important modems in both the hobbyist space (the Dual Standard being very popular with BBSs) and the business space (Telebit). We'd like to replace the Hayes 9600 with a Hayes 300 SmartModem so people can see the modem that birthed the Hayes command set. Research indicates that the 300 is the first with the Hayes AT command set, but any corrections are welcome. Does anyone have a 300 they would be wiling to donate or lend? Museum exhibits will be changed much more frequently, although not on any set schedule as of yet, so any loan will most certainly be for less than one year. I'll add that, as it stands, this is a behind glass exhibit. There certainly is the possibility of connecting some of these (or other) modems to machines as we consider possible infrastructure capabilities on the museum. Thanks! -Adam