Ascent Communication Technology AE208 Series, User Manual

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6. The session application compares the collected digits with the match template while
collecting digits.
7. After finding a match template for the called number, the originating VoIP gateway maps the
number to the terminating VoIP gateway.
8. The originating VoIP gateway initiates a VoIP call to the terminating VoIP gateway over the IP
network and establishes a logical channel for the call to send and receive voice data.
9. The terminating VoIP gateway receives the call from the IP network and seeks the destination
telephone according to the match template. If the call is to be processed by a private branch
exchange (PBX), the terminating VoIP gateway passes the call via PSTN signaling to the PBX
for processing until the destination telephone is connected. When the calling party or the
called party hangs up, the conversation ends.
12.1 Phone Settings
There are three tab pages in Phone Settings, including Port Settings , Dial Plan Settings and Port
Function Setting .
12.1.1 FXS Port Settings
A foreign exchange station (FXS) interface uses a standard RJ ‐ 11 connector and a telephone cable
to directly connect with an ordinary telephone or a fax machine. An FXS interface
accomplishes signaling exchange based on the level changes on the Tip/Ring line and provides
ring, voltage, and dial tone.
You can configure the Flash Time, FXS Impedance and Jitter Buffer on this page.
Max Flash Time A PSTN called party can press the flash hook to switch to another incoming call.
This setting specifies the maximum time the flash hook is pressed before the call is switched.
Min Flash Time This setting specifies the minimum time the flash hook is pressed before the
call is switched.
FXS Port Set the FXS port impedance to meet the requirement of different country
Jitter Buffer Type There are two kinds of jitter buffer: Fixed and Adaptive.
Init Length Specify the initial length of jitter buffer. It ranges from 20 to 700 milliseconds.
If you select adaptive jitter buffer, you should further specify the following parameters.
Max Length Specify the maximum length of jitter buffer. It ranges from 100 to 700 milliseconds.
Min Length Specify the minimum length of jitter buffer. It ranges from 10 to 90 milliseconds.