Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones 
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X ranges from 1 to 6 (for SIP-T41S/T27G) 
X is equal to 1 (for CP920) 
For SIP-T54S/T52S/T48S/T46S/T42S/T41S/T27G: 
opus-wb-Opus-WB (16KHz) 
opus-nb-Opus-NB (8KHz) 
The default value is opus-wb. 
For CP920: 
opus-fb-Opus-FB (48KHz) 
opus-swb-Opus-SWB (24KHz) 
opus-wb-Opus-WB (16KHz) 
opus-mb-Opus-MB (12KHz) 
opus-nb-Opus-NB (8KHz) 
The default value is opus-fb. 
Note: It is only applicable to SIP-T54S/T52S/T48S/T46S/T42S/T41S/T27G/CP920 IP 
phones. 
Web User Interface: 
Account->Codec->Opus Sample Rate 
Phone User Interface: 
None 
To configure the codecs to use and adjust the priority of the enabled codecs via web user 
interface: 
1.  Click on Account->Codec. 
2.  Select the desired account from the pull-down list of Account. 
3.  Select the desired codec from the Disable Codecs column and then click          . 
The selected codec appears in the Enable Codecs column. 
4.  Repeat the step 4 to add more codecs to the Enable Codecs column. 
5.  To remove the codec from the Enable Codecs column, select the desired codec and then 
click          .