C Series IP PhonesProduct Brochure
C66G/C66GP
Premium Business Series
Product Details

Product Overview
Dingxin Tongda C66G is a versatile high-definition IP phone designed for executive professionals. Its sleek, professional appearance and superior performance make it suitable for any environment. Featuring a 4.3-inch backlit color LCD screen with a maximum resolution of 480x272, it delivers excellent visual clarity, exceptional HD voice quality, and a rich suite of telephony features to meet diverse user needs.
The C66G SIP phone features dual Gigabit Ethernet ports, offering easy installation, simple configuration, and user-friendly operation. It supports 20 SIP accounts and 6-way conferencing. When paired with an IPPBX, it delivers a wide range of business capabilities.
Other models in the same series
Key Features
- 20 SIP accounts
- HD Voice
- Short Message, Voicemail, Message Waiting Indicator (MWI)
Technical Features
- 20 SIP accounts
- HD Voice
- Short Message, Voicemail, Message Waiting Indicator (MWI)
- Peer-to-peer call
- Auto-redial, Auto-answer
- IP Address Call
- Network packet capture
- Syslog
- SIP TLS, SRTP encryption
- Hold, Mute, Do Not Disturb
- Hold Music, Intercom, Multicast
Technical Specifications (4Item
- DTMF Mode
- In-Band, RFC2833, and SIP INFO
- Auto-configure/Upgrade
- FTP/TFTP/HTTP/HTTPS/PnP
- Phonebook
- 1000 groups
- Encoding
- PCMA, PCMU, iLBC G.729, G.723_53, G.723_63, G.726_32