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| iLBC Payload type |
| Default value is 97. Defines payload type for iLBC. The valid range is between 96 and |
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| 127. |
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| Default value is 100. Range is from 96 to 127. |
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| Default value is 99. Range is from 96 to 127. |
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| Default value is 104. Range is from 96 to 127. |
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| Payload type |
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| Default value is 103. Range is from 96 to 127. |
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| G729E payload type |
| Default value is 102. Range is from 96 to 127. |
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| VAD |
| Default is No. VAD allows detecting the absence of audio and conserve bandwidth by |
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| preventing the transmission of "silent packets" over the network. |
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| Symmetric RTP |
| Default is No. When set to Yes the device will change the destination to send RTP |
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| packets to the source IP address and port of the inbound RTP packet last received by |
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| Fax Mode |
| T.38 (Auto Detect) FoIP by default, or |
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| Fax Tone Detection |
| Default is Callee. This decides whether Caller or Callee sends out the |
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| Mode |
| T.38 or Fax Pass Through. |
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| Jitter Buffer Type |
| Select either Fixed or Adaptive based on network conditions. |
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| Jitter Buffer Length |
| Select Low, Medium or High based on network conditions. |
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| • High (initial 200ms, min 40ms, max 600ms) Note: not all vocoders can meet the |
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| high requirement |
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| • Medium (initial 100ms, min 20ms, max 200ms) |
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| • Low (initial 50ms, min 10ms, max 100ms) |
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| SRTP Mode |
| Default is Disabled. Other options are Enabled but not forced, and Enabled and |
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| forced. |
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| It uses SDP Security Description to exchange key. Please refer |
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| SDES: http://www.apps.ietf.org/rfc/rfc4568.html |
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| SRTP: http://www.apps.ietf.org/rfc/rfc3711.html |
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| SLIC Setting |
| Depends on standard phone type (and location) |
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| Caller ID Scheme |
| Select the value according to the local Telco standard where the GXW40XX is installed. |
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| Please refer to the pull down list to select. |
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| Polarity Reversal |
| Default is No. If set to “Yes”, polarity will be reversed upon call establishment and |
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| termination. |
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| Loop Current |
| Set to Yes if the traditional PBX you are using with GXW40XX uses this method for |
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| Disconnect |
| signaling call termination. Default is No. |
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| Loop Current |
| Default is 200. In 100 - 1 0000 milliseconds range. |
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| Disconnect duration |
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| Grandstream Networks, Inc. | GXW40XX User Manual | Page 34 of 38 | ||||
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| Firmware 1.0.4.2 | Last Updated: 06/2011 | ||
