17
Enter which codecs are to be supported. For some protocols (e.g. SIP), the G711U and G711A
protocols are always supported by default.
Select which complex codec is to be supported. Due to memory limitations, it is not possible to
select more than one complex codec.
Select the packetization period to be used for each selected CODEC.
Select whether Silence Suppression is to be supported for each CODEC.
The Jitter Buffer settings apply to all active CODEC decoders. You may choose between an
adaptive jitter buffer or a fixed jitter buffer. For an adaptive jitter buffer, choose the maximum
allowable playout delay (in milliseconds). For a fixed jitter buffer, choose the fixed playout delay
(in milliseconds).
Finally, select whether or not a decoder should automatically switch from an adaptive jitter buffer
to a fixed jitter buffer upon fax/modem tone detection. Adaptive jitter buffers are sometimes
detrimental to fax transmission over G711 CODECs if they have to adapt too rapidly or too
extensively due to inconsistent and widespread packet delays. In these adverse network
conditions, a fixed jitter buffer provides superior performance when handling incoming fax
transmissions over G711 CODECs.
Press "Save CODEC Settings" to save the new CODEC parameters.
SECTION VI.
System Configuration
This main menu option provides sub-pages to configure certain of the device’s system level
settings: the device’s SNMP, security and localization settings.
6.1
Security Settings
This sub-page allows an administrator to configure the device with an access password.
Enter the password and confirm by reentering it. Press "Save Security Settings" to apply the
password protection. Effective immediately, the password will be required whenever anyone
wishes to access the device’s configuration web pages.
