Table 2-5 FXS Extension Configuration Settings
Field
Description
POTS port
FXS port index
Extension number
A unique line number composed of numeric digits only, e.g. 101, with
maximum up to 32 digits.
Pickup group
The pickup group to which the extension belongs.
Unavailable timeout
Timeout for ringing before a call is answered.
User
Select the user this extension associates with.
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There may not be appropriate users to select initially. One can
come back later once the expected user has been added.
Voicemail
Select enable to allocate voicemail account for the extension.
Voicemail PIN
PIN to access voicemails. This is mandatory if above voicemail
option is enabled.
Language
Preferred language for system instructions heard from the extension.
Input/Output gain
Voice amplification or attenuation in dB scale to adjust input/output
volume.
Unconditional call forward
(Optional) Check voicemail as default destination or enter a number
to which incoming calls are forwarded unconditionally. The number
could be an extension or a PSTN number with appropriate outbound
prefix.
Unavailable call forward
(Optional) Enter a number to which incoming calls are forwarded
when not answered. The number could be an extension or a PSTN
number with appropriate outbound prefix.
Line in use forward
(Optional) Enter a number to which incoming calls are forwarded
when the extension is busy. The number could be an extension or a
PSTN number with appropriate outbound prefix.
Selective call blocking
(Optional) Check Block anonymous calls to block all calls without a
Caller ID; one could also explicitly list numbers to block by entering
one or more calling numbers and click Add button. Use Remove
button and Remove all button to cancel blockings.
Selective call forward
(Optional) Unconditional call forwarding according to the calling
number. Enter one or more calling numbers and a forwarding
number, and click Add button. E.g., forward only calls from 101 and
102 to a cellular number, while let the rest enter the voice mail by
default. Note that extensions must be separated by commas. Use
Remove button and Remove all button accordingly when some
forwardings are no longer required.