Sample Configuration. Grandstream Networks UCM6208, UCM6204, UCM6200 series

Ring Delay

Hold Access

Configure the time (in seconds) for delay before ringing the station when a call first coming in on the shared line. No delay is set by default. If set to 0, there will be no delay.

This option defines the competence of the hold action for one particular trunk. If set to “open”, any station could hold a call on that trunk or resume one held session; if set to “private”, only the station that places the trunk call on hold could resume the session. The default setting is “open”.

Sample Configuration

1. On the UCM6200, go to Web GUI  Extension/Trunk  Analog Trunks page. Create analog trunk or edit the existing analog trunk. Make sure “SLA Mode” is enabled for the analog trunk. Once enabled, this analog trunk will be only available for the SLA stations created under Web GUI  Extension/Trunk  SLA Station page.

Figure 105: Enable SLA Mode for Analog Trunk

2. Click on “Save”. The analog trunk will be listed with trunk mode “SLA”.

Figure 106: Analog Trunk with SLA Mode Enabled

3. On the UCM6200, go to Web GUI  Extension/Trunk  SLA Station page, click on “Add”. Please refer to section

[Create/Edit SLA Station]

for the configuration parameters. Users can create one or more SLA stations to monitor the analog trunk. The following figure shows two stations, 1002 and 1005, are configured to be associated with SLA trunk “fxo1”.

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Figure 107: SLA Example - SLA Station

4. On the SIP phone 1, configure to register UCM6200 extension 1002. Configure the MPK as BLF mode and the value must be set to “extension_trunkname”, which is 1002_fxo1 in this case.

5. On the SIP phone 2, configure to register UCM6200 extension 1005. Configure the MPK as BLF mode and value must be set to “extension_trunkname”, which is 1005_fxo1 in this case.

Figure 108: SLA Example - MPK Configuration

Now the SLA station is ready to use. The following functions can be achieved by this configuration.

• Making an outbound call from the station/extension, using LINE key

When the extension is in idle state, pressing the line key for this extension on the phone to off hook. Then dial the station’s extension number, for example, dial 1002 on phone 1 (or dial 1005 on phone 2), to hear the dial tone. Then the users could dial external number for the outbound call.

• Making an outbound call from the station/extension, using BLF key

When the extension is in idle state, pressing the MPK and users could dial external numbers directly.

• Answering call using LINE key

When the station is ringing, pressing the LINE key to answer the incoming call.

• Barging-in active call using BLF key

When there is an active call between an SLA station and an external number using the SLA trunk, other SLA stations monitoring the same trunk could join the call by pressing the BLF key if “Barge Allowed” is enabled for the analog trunk.

• Hold/UnHold using BLF key

If the external line is previously put on hold by an SLA station, another station that monitors the same SLA trunk could UnHold the call by pressing the BLF key if “Hold Access” is set to “open” on the analog trunk and the SLA station.

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