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•Call control protocol: SIP(RFC-3261) .
•Echo cancellation: G.165/G.167 16ms.
•IP Address: PPPoE, DHCP client, Static IP.
• LCD Display: Dialed Number, Coin Value, Remaining Credit, Reminding Message, Self-Diagnostic Message, and Revenue Information.
•Function Keys: Voice Amplification, Language Choice, Redial, Follow-on-Call.
•Optional Web-based management system for tariff / rate download
VoIP Payphone
Tongya Telecommunication Industry Co., Ltd.
