| Subscribe for MWI: | Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting Indication |
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| will be sent periodically. |
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| PUBLISH for Presence | Enable Presence feature. |
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| SIP Extension to notify SIP server that the unit is behind the NAT/Firewall. |
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| Voice Mail UserID | When configured, user can access messages by pressing “MSG” button. This ID |
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| is usually the VM portal access number. |
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| Send DTMF | This parameter specifies the mechanism to transmit DTMF digit. There are 3 |
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| supported modes: in audio which means DTMF is combined in audio signal (not |
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| very reliable with |
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| Early Dial | Default is No. Use only if proxy supports 484 response. |
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| Dial Plan Prefix | Sets the prefix added to each dialed number. |
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| Delayed Call Forward | Time waited before the call is forward to a number or VM. |
| Wait Time | Default is 20 seconds. |
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| Enable Call Features | Default is Yes. If set to “Yes”, all star code call features will be supported locally. |
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| Call Log | User can choose to disable Call Log and what kind of calls to log. |
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| Session Expiration | The SIP Session Timer extension enables SIP sessions to be periodically |
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| “refreshed” via a SIP request (UPDATE, or |
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| expires, if there is no refresh via a UPDATE or |
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| terminated. |
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| Session Expiration is the time (in seconds) at which the session is considered |
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| timed out, provided no successful session refresh transaction occurs beforehand. |
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| The default value is 180 seconds. |
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| Defines the minimum session expiration (in seconds). Default is 90 seconds. |
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| Caller Request Timer | If set to “Yes”, the phone will use session timer when it makes outbound calls if |
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| remote party supports session timer. |
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| Callee Request Timer | If selecting “Yes”, the phone will use session timer when it receives inbound calls |
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| with session timer request. |
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| Force Timer | If set to “Yes”, the phone will use session timer even if the remote party does not |
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| support this feature. If set to “No”, the session timer is enabled only when the |
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| remote party supports this feature. To turn off Session Timer, select “No” for |
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| Caller Request Timer, Callee Request Timer, and Force Timer. |
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| UAC Specify Refresher | As a Caller, select UAC to use the phone as the refresher, or UAS to use the |
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| Callee or proxy server as the refresher. |
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| UAS Specify Refresher | As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to |
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| use the phone as the refresher. |
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| Force INVITE | Session Timer can be refreshed using INVITE method or UPDATE method. |
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| Select “Yes” to use INVITE method to refresh the session timer. |
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Grandstream Networks, Inc. | GXP User Manual | Page 33 of 38 |
| Firmware 1.1.5.15 | Last Updated: 12/2007 |