AdminGuide:BasicConcepts:BasicFeatures

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Basic Features

SIPv2 (UDP, TCP, TLS, and WebSocket; RTP and SRTP)

Supported audio codecs (with transcoding): G.711 (A.law, u.law), G.726, GSM, G.722 (wideband), G.729, Opus

Supported video codecs (passthrough, no transcoding): VP8 H.264, H.263+, H.263, H.261

Fax support (audio or T.38 passthrough)

Busy Lamp Field

ENUM support

Access control list for extensions (ACL)

SNMP (v1/v2c) read access support (Net-SNMP daemon)

LDAP support (both client and server)