NEC SP5008A - Manual (Page 39)

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the announcement of IP address of LAN port, or
press #126# to get WAN port IP address.
FXO please following under step:
1. You can get a PSTN line and connect to the
L1 FXO port.
2. Use another PSTN phone to dial the PSTN
number (in step 1you connected on
FXO-08), you will hear a second dial tone
or greeting (please dial extension number).
3. Press #126# on the phone set, and you will
hear an IVR announcing the current IP
address of the WAN port.
4. Press #120# on the phone set, and you will
hear an IVR announcing the current IP
address of the LAN port.
Built-in Call Hold Music System built-in music of call hold, you can
Enable/Disable this feature.
DTMF Duration Specify the DTMF tone duration.
DTMF Interdigit Time Specify the interval of DTMF digit
Ring Time Limit ( 10~600sec )
(FXS only)
Specify the limitation of Ring time for incoming
call, when the ring is over the limit, system will
drop the call. The default range is 10~600sec.
Loop Current Drop Duration (0:disable,
100~1000ms )
Specify the duration (100~1000ms) of loop
current drop, 0 for disable. This feature is used
when the SP5008A (FXS) are connected with
answering machines. When the remote site
disconnects, the system will drop FXS port’s
voltage to 0, and make the answering machines
disconnect.
FXS Voltage Drop (FXS only) This option is used when a stand alone relay box
containing a PSTN and FXS port is connected to
the SP5008A’s FXS port. In this special
application, if there is a network or registration
failure, the system will drop the FXS port’s
voltage to 0, when the relay box detects the
status, it will switch the line to PSTN.