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Covid-19 & Returns: Due to Covid-19, certain manufacturers we carry are no longer accepting returns on their products until further notice and they are only offering replacements if an item is not working. Please feel free to contact us via phone or email to confirm the return policy on any item you might be interested in before purchasing on our website.
Toshiba Serial Interface Unit.
- 1 per system to provide from 1 to 4 RS-232 serial ports for SMDI, MIS, SMDR call accounting PC, 280Admin/280Backup PC or maintenance terminal, external modem, or CTI PC
- RSIU comes standard with 1 RS-232 port
- Accepts up to 3 RSIS subassemblies, or 2 RSIS and 1 RMDS modem subassembly
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