User's Manual

4-/8-/16-/24-/32-Port SIP Internet Telephony Gateway
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Explanation of FXS parameters:
Timeout for dialing
With the help of dialing timeout, you can limit the time between two digits while
users are typing the digits of a number through an extension. If the timeout
expires, the gateway will consider the dialing has finished and will try to send
message to SIP server. Default value is 4 seconds.
Timeout for answer
(Outgoing call)
This parameter determines how long the caller party will wait for answer when
making outgoing calls through a phone.
Timeout for answer
(Incoming call)
This parameter determines how long the phone rings when there are incoming
calls
No RTP Detected
If this parameter is enabled, the situation will be detected when there is no RTP
packets received during the set time period.
Period without RTP
Packet
The time period when there is no RTP packets received.
Call Process Tone
The signal tone standard after a phone is picked up. Choose national standards
from the drop-down box. Default value is the United States.
Auto Gain Control Whether to enable automatic gain control
Send Polarity Reversal
If polarity reversal is enabled, call tolls will be calculated based on the changes in
voltage. If polarity reverse is disabled, you need to set the time for offhook
detection and call tolls will be calculated starting from the set time.
Detect Hook flash
If ‘Detect Hook Flash’ is enabled, you need to set a minimum time and a
maximum time. If a phone’s hook flash is pressed for a time period greater than
the set minimum time but less than the maximum time, the action is considered
as a ‘hook flash’ operation. If a phone’s hook flash is pressed for more the set
maximum time, the action is considered as ‘hang up the phone’.
CID Type There are two CID types, namely DTMF and FSK.
Message Type There are two call display types including SDMF and MDMF
Message Format
The call display format in analog phone. It can be “Display Name and CID”, “CID
only”, or “Display Name only”; default value is “Display Name and CID”
Send CID before Ringing
If this parameter is enabled, the gateway send Caller ID to phone before ringing,
otherwise the caller ID will be displayed after ringing.
Delay of sending CID
after Ringing
How long the caller ID will be displayed after the caller ID is set and ringing.
Default value is 500ms.
CFNRy Timeout Timeout for ‘call forwarding on no answer’ service
SLIC Setting Impedance matched with analog phone.
Long Line Support Whether to enable ‘Long Analog Extension Line’.