SMS Direct Action Modem Isssue - Progress Community
The technical aspects of V90 or V92 on two analogue telephone lines (both side) or so called a point to point connection
External USB 2.0 Fax/Data Modem 56K V.92 - Bluetooth & Telecom Adapters | StarTech.com
HAWKING PN580U Data/Fax Modem 56Kbps USB V.90 (down-stream up to 56,000 bps). V.34bis, V.32bis, V.32, V.22bis, V.23, V.22, V.21 Error Correction Protocol V.42 and MNP Class 2 to 4 Data Compression Protocol