VoIP Codec Uebersicht

Opus codec support

WARNING: opus codec is listed here as an experimental feature, without production-grade support at the moment! Due to limited memory, the opus codec is not available for D120.

iLBC codec support

LIMITATION: If incoming SDP has different ptime (eg. ptime=30) than the configured ptime (e.g., Packet Size=20), the behaviour is undefined. To prevent this, please make sure the phone is configured with correct ptime.

Supported Codecs on D305, D315, D345, D375, D385, D712, 715, 725, D745, D765 and D785

SDP Name	Setting Name	Fmtp	Rate	Ptime 10ms	Ptime 20ms	Ptime 30ms	Ptime 40ms	Ptime 60ms	Bandwidth	Default Codec	No Licence needed
G722	g722		16000	20px	20px	20px	20px	20px	64	20px	20px
PCMU	pcmu		8000	20px	20px	20px	20px	20px	64	20px	20px
PCMA	pcma		8000	20px	20px	20px	20px	20px	64	20px	20px
x-msrta	msrta-nb	bitrate=11800	8000	20px	20px	20px	20px	20px	12	20px	20px
x-msrta	msrta-wb	bitrate=29000	16000	20px	20px	20px	20px	20px	64	20px	20px
x-msrta	msrta	bitrate=11800	8000	20px	20px	20px	20px	20px	12	20px	20px
opus	opus-wb	maxplaybackrate=16000	48000	20px	20px	20px	20px	20px	64	20px	20px
opus	opus-nb	maxplaybackrate=8000	48000	20px	20px	20px	20px	20px	12	20px	20px
opus	opus		48000	20px	20px	20px	20px	20px	64	20px	20px
AMR	amr-0		8000	20px	20px	20px	20px	20px	4	20px	20px
AMR	amr-1		8000	20px	20px	20px	20px	20px	5	20px	20px
AMR	amr-2		8000	20px	20px	20px	20px	20px	6	20px	20px
AMR	amr-3		8000	20px	20px	20px	20px	20px	7	20px	20px
AMR	amr-4		8000	20px	20px	20px	20px	20px	7	20px	20px
AMR	amr-5		8000	20px	20px	20px	20px	20px	8	20px	20px
AMR	amr-6		8000	20px	20px	20px	20px	20px	10	20px	20px
AMR	amr-7		8000	20px	20px	20px	20px	20px	12	20px	20px
AMR-WB	amrwb-0		16000	20px	20px	20px	20px	20px	7	20px	20px
AMR-WB	amrwb-1		16000	20px	20px	20px	20px	20px	9	20px	20px
AMR-WB	amrwb-2		16000	20px	20px	20px	20px	20px	13	20px	20px
AMR-WB	amrwb-3		16000	20px	20px	20px	20px	20px	14	20px	20px
AMR-WB	amrwb-4		16000	20px	20px	20px	20px	20px	16	20px	20px
AMR-WB	amrwb-5		16000	20px	20px	20px	20px	20px	18	20px	20px
AMR-WB	amrwb-6		16000	20px	20px	20px	20px	20px	20	20px	20px
AMR-WB	amrwb-7		16000	20px	20px	20px	20px	20px	23	20px	20px
AMR-WB	amrwb-8		16000	20px	20px	20px	20px	20px	24	20px	20px
AMR-WB	amrwb		16000	20px	20px	20px	20px	20px	7	20px	20px
GSM	gsm		8000	20px	20px	20px	20px	20px	13	20px	20px
G723	g723		8000	20px	20px	20px	20px	20px	7	20px	20px
G726-16	g726-16		8000	20px	20px	20px	20px	20px	16	20px	20px
G726-24	g726-24		8000	20px	20px	20px	20px	20px	24	20px	20px
G726-32	g726-32		8000	20px	20px	20px	20px	20px	32	20px	20px
G726-40	g726-40		8000	20px	20px	20px	20px	20px	40	20px	20px
AAL2-G726-16	aal2-g726-16		8000	20px	20px	20px	20px	20px	16	20px	20px
AAL2-G726-24	aal2-g726-24		8000	20px	20px	20px	20px	20px	24	20px	20px
AAL2-G726-32	aal2-g726-32		8000	20px	20px	20px	20px	20px	32	20px	20px
AAL2-G726-40	aal2-g726-40		8000	20px	20px	20px	20px	20px	40	20px	20px
G729	g729	annexb=no	8000	20px	20px	20px	20px	20px	8	20px	20px
G729	g729-annexb=no	annexb=no	8000	20px	20px	20px	20px	20px	8	20px	20px
G729	g729-annexb=yes	annexb=yes	8000	20px	20px	20px	20px	20px	8	20px	20px
G729	g729-no-fmtp		8000	20px	20px	20px	20px	20px	8	20px	20px
G729A	g729-annexb=no	annexb=no	8000	20px	20px	20px	20px	20px	8	20px	20px
G729A	g729-annexb=no		8000	20px	20px	20px	20px	20px	8	20px	20px
ilbc	ilbc-30	mode=30	8000	20px	20px	20px	20px	20px	8	20px	20px
ilbc	ilbc-20	mode=20	8000	20px	20px	20px	20px	20px	8	20px	20px
CN	cn		8000	20px	20px	20px	20px	20px	0	20px	20px
CN	cn-wb		16000	20px	20px	20px	20px	20px	0	20px	20px
telephone-event	telephone-event	0-15	8000	20px	20px	20px	20px	20px	0	20px	20px
telephone-event	telephone-event-0-16	0-16	8000	20px	20px	20px	20px	20px	0	20px	20px
telephone-event	telephone-event-no-fmtp		8000	20px	20px	20px	20px	20px	0	20px	20px

Default Codec List: g722,pcmu,pcma,gsm,g723,g726-32,aal2-g726-32,g729,telephone-event

Supported Codecs on D120

SDP Name	Setting Name	Fmtp	Rate	Ptime 10ms	Ptime 20ms	Ptime 30ms	Ptime 40ms	Ptime 60ms	Bandwidth	Default Codec	No Licence needed
G722	g722		16000	20px	20px	20px	20px	20px	64	20px	20px
PCMU	pcmu		8000	20px	20px	20px	20px	20px	64	20px	20px
PCMA	pcma		8000	20px	20px	20px	20px	20px	64	20px	20px
GSM	gsm		8000	20px	20px	20px	20px	20px	13	20px	20px
G723	g723		8000	20px	20px	20px	20px	20px	7	20px	20px
G726-32	g726-32		8000	20px	20px	20px	20px	20px	32	20px	20px
AAL2-G726-32	aal2-g726-32		8000	20px	20px	20px	20px	20px	32	20px	20px
G729	g729	annexb=no	8000	20px	20px	20px	20px	20px	8	20px	20px
G729	g729-annexb=no	annexb=no	8000	20px	20px	20px	20px	20px	8	20px	20px
G729	g729-annexb=yes	annexb=yes	8000	20px	20px	20px	20px	20px	8	20px	20px
G729	g729-no-fmtp		8000	20px	20px	20px	20px	20px	8	20px	20px
G729A	g729-annexb=no	annexb=no	8000	20px	20px	20px	20px	20px	8	20px	20px
G729A	g729-annexb=no		8000	20px	20px	20px	20px	20px	8	20px	20px
CN	cn		8000	20px	20px	20px	20px	20px	0	20px	20px
CN	cn-wb		16000	20px	20px	20px	20px	20px	0	20px	20px
telephone-event	telephone-event	0-15	8000	20px	20px	20px	20px	20px	0	20px	20px
telephone-event	telephone-event-0-16	0-16	8000	20px	20px	20px	20px	20px	0	20px	20px
telephone-event	telephone-event-no-fmtp		8000	20px	20px	20px	20px	20px	0	20px	20px