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Group Name. Enter a name for the channel group.
Device Type. Specify the device type.
Add Channels to this Group. Select the channels to add to the group.
Callback and Default Fax Extension. Enter the Callback Extension and the Default Fax Extension for the channel. Voice calls that do not match any Incoming Call rules or routes are sent to the Callback Extension. If you have fax installed, Fax calls that do not match any Incoming Call Routes are sent to the Default Fax Extension.
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NOTE: Unless you are an advanced user, do not change any of the other settings. |
When you are done, clickSave Channel Groupto create the group.
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WARNING: Switchvox restarts after you create a new channel. Any current calls are dropped, and any agents logged into queues are logged out. |
Device Types
Device Type describes the type of line that is connected to the PBX through this device. The following options are available:
FXO and FXS. Foreign Exchange Office (FXO) and Foreign Exchange Service (FXS) device types refer to the type of interface on the telephone equipment: an FXO interface receives power (battery) and receives ring signals; and an FXS interface provides power (battery) and generates ring signals. FXO devices can only communicate with FXS devices and vice versa. Each FXO and FXS type listed in the dropdown has an associated signaling type: kewlstart, loopstart, or groundstart. The signaling type is the “language” the interface uses to communicate to the devices connected to it. Some devices have their signaling type preset and cannot be changed (for example, analog cards). Some devices can have their signaling type changed to match the devices they are connected to.
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NOTE: You cannot have both FXS and FXO channels in the same group. However, you can create more than one group per signaling type. |
FXO (Foreign Exchange Office) with Kewlstart signaling. Select this option if you are connecting normal analog phone lines from the phone company into your PBX. This option can also be used with certain T1 lines or T1 channel banks in rare instances.
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Echo Cancel when bridging TDM channels. This option controls echo cancellation for calls that enter Switchvox on one hardware channel, and exits Switchvox on another hardware channel. IE: this affects calls that do not touch any VoIP Providers or SIP handsets. Calls of this nature do not normally need echo cancellation, so it is safe to leave this option to the default of No.
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NOTE: This setting does not apply to calls to normal SIP handsets. |
Echo Canceller Tail Length. This controls how long the canceller should listen for echo to return. It is best to use the smallest value possible. For analog lines, echo is usually in the 64 or 128 range. For T1 lines, 128 or greater.
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Set the Fax Buffer Policy for this Channel Group. To turn this option off, select Disabled. The default is Half. This option lets you set a buffer policy to prevent fax failures on high latency systems. See the related option "Number of Fax Buffers." You must install a fax license and the fax software to make faxing available. For details, see the “Digium Addon Products” article.
Fax Detection
Set the Fax Detection for this Channel Group.
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NOTE: You must install a fax license and the fax software to make faxing available. For details, see the “Digium Addon Products” article.
Fax Error Correction Mode
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Set the number of fax buffers. The default is 12. This option lets you set a buffer policy to prevent fax failures on high latency systems. See the related option “Fax Buffer Policy.” You must install a fax license and the fax software to make faxing available. For details, see the “Digium Addon Products” article..
Overlap dial
Overlap dialing sends each digit pressed as it's entered, instead of sending the entire number all at once. It is safe to leave this option disabled.
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Enabling this option will enable receiving (and sending) caller-id. It is almost always recommended to leave this set to Yes. The one situation where it may be prefereable preferable to disable caller-id is when using analog lines in a country (such as the USA) that sends the caller-ID between the first and second ring. In order to receive caller-ID on analog lines, Switchvox has to wait until the second ring before answering. If caller-ID is disabled, Switchvox will answer inbound calls immediately, without waiting for the caller-ID.
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