Grandstream Networks, Inc. GXW410x User Manual Page 19 of 35
Firmware Version 1.3.4.13 Last Updated: 3/2012
CONFIGURING THE FXO CHANNELS
Configuring the FXO channels on the GXW – 410x is an easy process. Follow the GUI interfaces. The
Device Status page terms are defined in Table 8: FXO Lines Configuration Definitions. An example
of the Channel Dialing Configuration is shown in Figure 6. Please note the default is always configured.
The user has the option to change the default settings as described in the Table 8.
T
ABLE 8: FXO LINES CONFIGURATION DEFINITIONS
Syntax for Channel Specific Settings:
Default: ch1-8:X; {all channels 1 to 8 are set to use value X}
Additional Examples:
ch1,3-6:10;ch2,7-8:12 {channels 1,3,4,5 and 6 are set to use value 10 while channels 2,7 and 8
are set to use value 12.
Enable Current
Disconnect
When set to Y, Current Disconnect is enabled. Certain PSTN COs require this to be enabled, in
order to realize disconnect signal from PSTN side. Default is Y.
If enabled use threshold: Default is 100ms. Range is 40ms to 800ms.
Certain PSTN service providers have a threshold time within which the line stabilizes after off-
hook. It is entirely dependent on provider, however if you experience PSTN line detection
issues, please modify this setting appropriately in 100ms increments.
If you are not sure if this option should be enabled please refer to Table 9 (FXO Lines Test Tab
Definition). This tool will run an automated test to determine the proper PSTN configuration that
the gateway should have to work with your Service Provider or analog PBX.
Enable Tone
Disconnect
Default is No. If PSTN provider uses call progress tones then it should be set to Yes in order to
realize disconnect tone. Please configure accurate Call Progress Tones on Channels webpage
based on PSTN provider (or traditional PBX) settings.
If you are not sure if this option should be enabled or what Call Progress Tones are required
please refer to Table 9 (FXO Lines Test Tab Definition). This tool will run an automated test to
determine the proper PSTN configuration that the gateway should have to work with your
Service Provider or analog PBX.
Enable Polarity
Reversal
Default is No. This should be set to Yes only if the FXO lines are subscribed to PR service from
PSTN Service provider. It is merely a PR detect feature.
***Note: If there is no PR service from provider on the FXO line, and this setting is configured to
Yes, calls will not be successful.
Enable Call
Answer
Supervision
Default is No. If PSTN providers use the CAS then this option should be enabled. The Call
Answer Supervision (CAS) is for billing—the telephone exchange and the customer need an
accurate indication of calls through a network.
Silence Timeout
Terminate call after long silence detected. Default is 60 seconds, max 65536.
Incoming Call
Timeout
Default value is 6 seconds. Incoming call will stop ringing when not picked up given a specific
period of time.
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