Codecs on SIP phones

Software Versions:

    7.4.9c, 7.5.2

Hardware Version:

    1.0.1

Android 9+:

    v6.2.3 (7 Jul 2026)

Opus

G722

PCMA

PCMU

legacy:

G729AB

G729

G726/40 kbps

G726/32 kbps

G726/24 kbps

G726/16 kbps

iLBC/15.2 kbps

iLBC/13.3 kbps

G723.1/63 kbps

G723.1/53 kbps

Opus

G722

PCMA

PCMU

legacy:

G.729A/B

G.726-40 kbps

G.726-32 kbps

G.726-24 kbps

G.726-16 kbps

iLBC

G.723.1 kbps

not supported: Opus

1) G722

G711u

G711a

legacy:

2) G729a

3) G726-40

G726-32

G726-24

G726-16

not supported: iLBC

not supported: G.723

Opus/48 kHz

G722/8 kHz

PCMU/8 kHz

PCMA/8 kHz

legacy:

G729/8 kHz

not supported: G.726

iLBC/8 kHz

not supported: G.723

other codecs enabled:

L16/44.1 kHz

speex/32kHz

speex/16 kHz

iSAC/16 kHz

BV16/8 kHz

GSM/8 kHz

(priority order can not be defined in the admin UI)

Use Pref Codec Only: no

G729a Enable: yes

G722 Enable: yes

G726-16 Enable: no

G726-24 Enable: no

G726-32 Enable: no

G726-40 Enable: yes

Release Unused Codec: no

Use Remote Pref Codec: yes

Codec Negotiation: list all