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Applications for SmartNode 4110 Series 23
SmartNode 4520 & 4110 Series User Manual 2 • Applications overview
Application—Private line automatic ringdown (PLAR)
A private hot-line can be created by using two FXS models back-to-back (see figure 11). These can be found
in use as courtesy phones at ATM’s, information kiosks, and emergency assistance pedestals. In this applica-
tion, when one handset is picked-up, the remote handset immediately begins ringing. When the remote
handset is picked-up, the speech path is completed. The end-to-end link supports voice, fax Gr.3 (2.4–14.4
kbps) with T.38 or fax- and modem bypass using a G.711 codec.
Figure 11. FXS to FXS Hotline
Application—Enterprise campus BRI to FXS telephony extension
In combination with the Patton SmartNode 1000 and 2000 Series models the FXS gateways provide ISDN
BRI to FXS extensions over IP (see
figure 12).
Figure 12. BRI to FXS extension