Quintum Technologies Tenor AS - Manual (Page 17)

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Chapter 1: Overview
Tenor AS Call Paths
Tenor MultiPath Switch (ASM200 and ASM400) Configuration
The Tenor MultiPath Switch Configuration is symmetrical with an equal number of Phone/FXS and
Line/FXO ports. Calls are routed from the Phone/FXS, Line/FXO, or IP Network. Calls can be
routed in any direction between any of the ports.
FXS (Phone) Originated Calls. Calls coming from the Phone/FXS interface (i.e. PBX) may be
switched to either the data network as a VoIP call or to the FXO interface, typically for connection to
another circuit switched network such as the PSTN. The routing decision made by the Tenor is
based upon your configuration and the dialed number. See Figure 1-4 for an example of a call origi-
nated from a PBX.
Figure 1-4 FXS (Phone) Originated Calls
FXO (Line) Originated Calls. A call coming from a Line/FXO interface may be switched to either
the data network as a VoIP call, a Line Circuit, or trunk typically for connection to a termination
device on the user’s premises such as a PBX. The routing decision made by the Tenor AS is based
upon your configuration and the dialed number. See Figure 1-5 for an example of a call originated
from the PSTN.
Figure 1-5 FXO (Line) Originated Calls
Keyswitch
Phone
PBX
PSTN
IP Network
OR
FXS Port FXO Port
Keyswitch
Phone
PBX
PSTN
FXS Port FXO Port
IP Network
OR