and in-band tone. It must match configuration on the
device side.
In-band DTMF mode consumes the limited DSP
resource when using a highly compressed codec,
such as G.729 or G.723.1. Therefore, calls will not
connect with such setting if DSP is not installed.
Although using a low-complexity codec such as
G.711 does not require DSP, DTMF detection still
takes considerable CPU resource and impacts
several system specs. Be cautious when
configuring an extension with in-band DTMF
mode.
3.1.5.2 Add Analog Phone
1.
Enter settings shown in Table 3 -5.
2.
Click
Add
to see the newly added analog phone in the table of the webpage.
For deleting an analog phone, select a POTS port and click
Del
.
Click
Finish
to finalize all the settings, and go back to the homepage.
Table 3-5 Add Analog Phone Settings
Field
Description
POTS Port
FXS port index.
Extension Number
A unique line number composed of digits only, e.g. 101;
20 digits maximum and the length of digits may not be
less than 2.
User
Select a user that this extension associates with.
If there is not any appropriate users to select, one
can come back later once the expected user has been
added.
Pickup Group
The pickup group that the extension belongs to.
5
Please refer to 1.27 for details.
13
