C-TEL brand with high technical VoIP Phone with compatitive price.
We promise the high quality products and satisfied service !
- Support two SIP servers running at the same time
- Redundancy SIP server capable
- Support SIP/IAX2 protocol
- NAT, Firewall
- DHCP client server
- Support PPPoE (used for ADSL, cable modem connecting)
- Support major G7.xxx CODEC
- VAD, CNG
- G.165 compliant 16ms echo cancellation
- E.164 dial plan and customized dial rules
- Tone generation and local DTMF re-generation accord with ITU-T
- Ø Support inband audio, RFC2833 and SIP info etc. DTMF transmission mode
- Speed dial
- Call Forward, Call Transfer, 3-way conference calls
- Answering machine
- Caller ID display
- DND (Do Not Disturb), Black List, Limit List
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