When the IP phone under the U1911 initiates an outgoing conference call through the AT0 trunk, which AT0 trunk is used to route the call?

If the trunk function is not used, change the dialup timer value of the AT0 trunk to 0. The AR does not need to spend 5s on detecting the ringback tone. A user needs to wait for only 3s to hear the ringback tone. Run the pbx number-parameter 40 0 command in the voice view to set parameter 40 to 0. NOTE: The modification may cause failures of calls transferred through trunks. The pbx number-parameter 40 0 command can be used only when POTS or SIP phones make outgoing calls through AT0 trunks.

In the scenario where the U1900 uses the AT0 trunk for networking, for a local conference initiated on the IP phone, the corresponding dedicated line is used; for an instant conference, the line is selected in polling mode. If all AT0 lines are dedicated lines, only the outgoing call for initiating a local conference can be routed through these lines.

No, because only one AT0 trunk line is available. When the U1960 is configured with multiple AT0 trunks or the E1 digital trunk, multiple outgoing calls can be made in the conference to invite multiple participants.

Connect the analog phone directly to the AT0 trunk line and make a call. If the calling number is displayed immediately a call comes in,, DTMF signals are used. If the calling number is displayed after the first ring and before the second ring, FSK signals are used. Run the config cid parameter cidmode fsk(dtmf) cidtime beforering (aftering) command and verify the calling number display.

Step 1 Log in to the web management system of the U1960. Step 2 On the AT0 configuration page, set the line section mode to polling.