AddPac Technology, an industry leader in the development, manufacture, and marketing of extended range VoIP, Audio/Video Conference, IP broadcasting solutions, releases a next generation Audio MCU(Multipoint Conferencing Unit) which is a hardware type, state-of-the-art equipment for multipoint audio conferencing and real-time collaborative IP communications over internet. It is a central processing solution which provides a wide variety of features such as easy and high level conference control, user-friendly management, powerful audio decoding/mixing/encoding, transcoding and switching capability through reliable real-time encoding and decoding of transmitted audio data from multiple IP audio endpoints such as IP Phone, VoIP Gateway.

AP-MC1500 provides a complete solution specifically for large audio conferences with multiple sites participating which are implemented technically by connecting mixed audio data stream from independent terminals to single 'virtual group' for central mixing and transcoding process. Designed on the basis of firmware upgradeable high performance DSP, AP-MC1500 supports not only latest audio codec currently but has capabilities of new codec services leveraging continuous firmware level upgrade. AP-MC1500 is also a key component of a comprehensive solution combined with AddPac's IP-PBX (especially large capacity, IPNext5000, IPNext10000, etc), IP terminal equipments such as AP-IP300 IP phones, various VoIP gateways (1~256 Port Analog VoIP Gateway) for multipoint audio conferencing, which provides easy-to-use user interfaces, robust performance and excellent audio quality.

Hardware Type Central Processing MCU with Robust Performance

AP-MC1500 MCU system for multipoint audio conferencing features two(2) Fast Ethernet interfaces, a RS-232C console port for maintenance and two(2) hardware module slots for optional card. Hardware based MCU module (HIM-AMCU128, HIM-AMCU64, etc) and diverse network interface (V.35, ATM, POS) modules can be equipped in AP-MC1500's module slot interface. Designed on the foundation of parallel DSP architecture for real-time processing, MCU module provides a full suit of functionality for rich multipoint audio conferencing experience including a wide range of transcoding coverage from voice band G.711, G.726, G.729, G.723.1, etc audio signals.

Adapt to the Future Circumstances : Firmware upgradeable technology

Designed on programmable high performance RISC CPU and DSP, AP-MC1500 and its MCU module are capable of adopting new capabilities and improvement by downloading firmware from website or with its auto-upgrade option as the customers' needs grow.

Maximum 120 Channel Audio Conferencing on the basis of parallel DSP architecture

AP-MC1500 is designed on the basis of parallel DSP architecture with the highest level processing capabilities for high-capacity multipoint audio conferencing. HIM-AMCU128 audio MCU module can support maximum 128 audio channels (IP end-point terminal) concurrently, and HIM-AMCU64 module can support maximum 64 audio channels concurrently.

Seamless Interoperability: Supporting Diverse Concurrent Codec& Protocol

AP-MC1500 supports diverse audio codecs concurrently which is ordinarily being used on IP end-point terminals. It supports mixed IP audio calls to enable the powerful mixing/transcoding capabilities among diverse audio codecs simultaneously providing the optimal audio experience. AP-MC1500 supports the multiple audio conferencing sessions and multiple audio codecs(G.711, G.726, G.729, G.723.1,etc) per a session. Also AP-MC1500 supports the SIP, H.323 protocols for VoIP signaling. For H.323 based VoIP signaling, AP-MC1500 supports the internal H.323 gatekeeper service features. For SIP VoIP signaling protocols, external AddPac Technology’s enterprise SIP Call Manager is recommended.

Multipoint Audio Conferencing Solution with Outstanding Network Service Capability

AP-MC1500 is an integrated, feature-rich network equipment delivering routing, NAT/PAT, DHCP Server/Relay, Public IP sharing, VRRP and QoS. In today's mixed network of xDSL, Cable, FTTH, Metro Ethernet, Metro ATM, Leased line and dynamic IP environment, not only the ample network service features, but also high-end QoS(Quality of Service) and security features are requested. Based on two(2) 10/100Mbps Fast Ethernet ports, AP-MC1500 offers integrated network and security service of LAN-to-LAN routing, bridge and NAT/PAT.

AddPac Technology's VoIP gateway, IP-PBX series and various multimedia products such as video phone, video conference have been highly appraised with their advanced performance and reliability by worldwide customers. With its years of experience and know-who would make AP-MC1500 as the ultimate solution for next-generation IP telephony service.

Network Diagram

Overall Features
	128 Channel. 64 Channel Audio MCU Module Support
	System board, two(2) slot optional module cards
	Two(2) module slots for Voice MCU, Network Interface ① HIM-AMCU128 128 channel Voice MCU Module ② HIM-ATMOC3-1 1-Port OC3 155Mbps ATM Network Interface Module ③ HIM-ATMDS3-1 1-Port DS3 45Mbps ATM Network Interface Module ④ HIM-ATM1E1 　 1-Port E1 ATM Network Interface Module ⑤ HIM-V35FR1 　 1-Port V.35 Interface Module ⑥ HIM-V35FR2 2-Port V.35 Interface Module ⑦ HIM-V35FR6 6-Port V.35 Interface Module
Audio Features
	G.711, G.726, G.729,G.723.1, etc
Signaling Features
	IETF SIP, H.323 Signaling Protocol
Conferencing Features
	Add-Hoc, Meeting, Dial-out Conferencing Mode Support
Network Service
	High-performance IP-Routing Capability with Reliability
	Static and IEEE 802.1Q VLAN Routing Protocols including VRRP
	Traffic Queuing, and SNMP MIB v2 for Network Management Features
	Standard & Extended Access List for Security Functions
	Essential Scalability Features such as DHCP Server & Relay, NAT/PAT, IEEE Transparent Bridging, IP Accounting, and Debugging/Diagnostics, etc.
	DNSProxy, MAC Address Filter Service