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1/13/2020 HedEx Startpage
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Parameter Description
Caller ID Display A called party-side service allows the number of the calling party to be presented to the called party.
Anonymous Call This service does not allow the number of the calling party who registers this service to be presented to the called party.
Call Transfer Enables or disables the call transfer function.
Physical Port Parameters (SIP)
Ringing Voltage Indicates the voltage when a phone rings.
DC Voltage Indicates the DC voltage on a voice port.
Port TX gain Indicates the Tx gain on a port.
Port RX gain Indicates the Rx gain on a port.
Lower Threshold for
Flash Hooking Duration
Indicates the lower threshold for flash hooking (press the flash button). This function is used for call transfer from an external call to an
internal call.
Upper Threshold for
Flash Hooking Duration
Indicates the upper threshold for flash hooking.
On-hook Confirmation
Time
Indicates the onhook confirmation time.
Impedance Indicates the impedance of the connected device.
Feed Current Feed current supplies power to speech circuits, which requires only current but no voltage.
CLIP Format Specifies the CLIP format that is supported by the connected phone, including Mdmf-FSK, Sdmf-FSK, Dtmf, R1.5, and Etsi.
FSK Transmission Delay Indicates the delay before FSK signals are issued.
CLIP Flow
After ring: the number of the calling party is presented after ringing.
Before ring: the number of the calling party is presented before ringing.
Enable DSP Template This function can only be used for maintenance and cannot be enabled.
Polarity Reversal on
POTS Port
Enables or disables polarity reversal on a POTS port. This function is usually used for charging.
Display Time in CLIP Enables or disables time synchronization on a phone. After this function is enabled, the ONT issues time to the phone.
Enable DSP HighPass
Filter
Enables this function to mask the low frequency (lower than 50 Hz) interference on the phone.
Enable Forced FSK
Transmission
Enables or disables forced FSK transmission.
NOTE:
Physical Port Parameters specify the POTS port physical parameters and the parameter names use the standard terms, which are unnecessary to be described here.
VoIP Advanced Configuration - H.248 Protocol
1. In the navigation tree on the left, choose Advanced Configuration > Voice > VoIP Advanced Configuration. In the pane on the
right, you can configure the line name and associated POTS, as shown in Figure 3.
Figure 3 VoIP advanced configuration - H.248 protocol
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