Specifications

4. INSTALLATION FOR Rhino OST Analog CARDS
4.a Connecting Rhino Analog cards to telco/extensions.
The Rhino OST PCI analog cards use an industry standard RJ11 four pin plug for the R4FXO quad port
FXO card, with pin lay out shown below. And an industry standard RJ14 four pin plug for all octal modular
cards (R8FXX), pin lay out is also shown below.
Phone Line Interface on RJ11 - 4 pin Modular jack:
Pin Number Signal To/From What?
1 Not connected
2 Line Ring RX Coming From PSTN (CO)
3 Line Tip TX Going to PSTN (CO)
4 Not connected
Phone Line Interface on RJ14 - 4 pin Modular jack:
Pin Number Signal To/From What?
1 Line 2 Tip TX Going to PSTN (CO)
2 Line 1 Ring RX Coming From PSTN (CO)
3 Line 1 Tip TX Going to PSTN (CO)
4 Line 2 Ring RX Coming From PSTN (CO)
The 24 FXS channel (R24FXS) and modular 24 channel Rhino OST PCI (R24XX) analog cards uses an
industry standard RJ21 connection, shown below.
Rhino Equipment Corp. • 8240 S. Kyrene Rd. • Suite 107 • Tempe, AZ 85284 • [phone]
22