Matrix SETU VFX44L, Системное руководство

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Matrix
93 SETU VFX88L
/
VFX44L V1
System Manual
Disconnect Signaling on FXS Port
What’s this?
• As a general application, telecom equipment like PCO machine is
connected to the FXS port of the system. Now whenever the called
party (remote party) disconnects or goes on-hook it is required to
inform the FXS port so that the PCO machine can consider the call
as complete and stop billing. In absence of this signal, the call is
considered as complete when the caller goes on hook. But this will
result in inaccurate billing.
• To solve such problems, the system supports ‘Disconnect
Signaling’. When a call is made from FXS to SIP or SIP to FXS, if
SIP disconnects, Disconnect Signal is generated on the FXS port.
• It can be in the form of:
• None
• Polarity Reversal
• Open Loop Disconnect
How it works?
• ‘Disconnect Signaling’ is applicable for both incoming and outgoing
calls.
• When a call is made from FXS port to SIP or SIP to FXS and call
gets matured, the system will wait for ‘disconnect message’ on SIP
port.
• If the message is received on SIP, the system will check the
Disconnect Signaling programmed for the FXS port from where call
has been originated or terminated.
• This parameter can be set for either one of the following options:
•
None:
It is used when no signaling is to be generated on FXS for
call disconnection. When call is disconnected, user will get Error
tone.
•
Polarity Reversal
: It is used when the call disconnection is to be
signaled in the form of Polarity Reversal. The Battery polarity of
the FXS port will be reversed. For example, if the battery polarity
of the FXS port is +ve for TIP and -ve for RING in speech
condition then on disconnection on other port, TIP will become -ve
and Ring will ve. When call is disconnected, user will
get Error tone. When FXS port goes ON-Hook, the Battery