G.711 (A-law and μ-law)
G.726 (32 kbps)
G.729 A
Dynamic payload
RFC2833, SIP Info
Real time T.38
DTMF-based CID
Provides high-quality, clear-sounding voice, using advanced voice quality-of-service (QoS) capabilities and
Do not disturb
Call transfer, call return, and call back on busy
Three-way conference calling with local mixing
Per-call authentication and associated routing
Call blocking with toll restriction
Distinctive ringing: Calling and called number
Off-hook warning tone
Advanced inbound and outbound call routing
Hotline and warmline calling
Long silence (configurable time setting) silence threshold
Disconnect tone (for example, reorder tone)
Configurable ring frequency
Ring validation time setting
Tip and ring voltage adjustment setting
Ring indication delay setting
Streaming audio server: Up to 4 sessions
Music on hold
Call waiting, call waiting and caller ID
Caller ID with name and number
Caller ID blocking
Selective and anonymous call rejection
Call forwarding: No answer, busy, and all
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