Protocols

SIP (including Webex & MS-SIP)
H.323
WebRTC
Microsoft Teams
Zoom (via CRC)
Skype for Business
Microsoft Lync
PSTN
RTMP
Google Meet

Audio codecs

Point to point between endpoints ­- any.

Multipoint and Clients:

G.711(a/μ)
G.719
G.722
G.722.1
G.729
G.729A
G.729B
Siren7
Siren14
Opus
SILK
MPEG­4
AAC­LD
Speex
AAC­LC

Video codecs:

Point to point between endpoints ­- any.

Multipoint and Clients:

H.261
H.263
H.263++
H.264
H.264 SVC
RTVideo
VP8

Video resolutions

Video resolutions are calculated by the call bandwidth available.

Minimum of 512kbps (up/down) for high quality SD video
Minimum of 1.2 Mbps (up/down) for 720p HD video
Minimum of 1.8 Mbps (up/down) for sending 1080P HD Video
Minimum of 1.8 Mbps (up/down) for sending 1080P HD Video -
Per call bandwidth of 60-80kbps for audio only

Calls to VMRs have a maximum resolution and frame rate of 720p @ 30fps

Content sharing

Point to point between endpoints ­- any.

Multipoint and Clients:

H.239
BFCP
RDP
VbSS