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	H.248 Datasheet

Media Gateway Control: MEGACO(H.248) stacks

Netbricks Megaco/H.248 stack called MEGACO-BRICKS™ is a source code implementation of the Megaco/H.248 Protocol. MEGACO is a protocol enabling a centralized Softswitch (or Media Gateway Controller MGC) to control Media Gateways between Voice over Packet (VOP) networks and traditional ones.Megaco Protocol is a joint work of IETF and ITU-T. It is named Megaco in IETF document and H.248 in ITU-T document, but the content is exactly the same.

Our MEGACO stack is compliant with IETF RFC 3525 for version 1, RFC 4566 , and ITU-T S H.248.1 for version 3. MEGACO-BRICKS supports the following key features for both MGC and MG sides:

- Gateway or Control Manager Application - Support of ITU-T T.38 Fax Relay in Megaco. - Megaco messages (including SDP session description) Text & BER encoder/decoder. - Support of all transactions. - Support of event/signal packages : Generic, Base Root, Tone Generator, Tone Detection, Basic DTMF Generator, DTMF detection, Call Progress Tones Generator, Call Progress Tones Detection, Analogue Line Supervision, Basic Continuity, Network, RTP, TDM Circuit. - Megaco Finite State machine with security procedures over UDP. - Support of multiple instances and both sides (MGC and MG) on a single system.

MEGACO-BRICKS and MGCP-BRICKS are based on NETBRICKS architecture using object oriented design and on a message passing mechanism for inter-entity communication. MEGACO-BRICKS and MGCP-BRICKS are designed to interface UDP or TCP layer through the standard BSD Socket interface. Interfaces to most of commercial OS and RTOS are provided : Windows NT/2000/XP, Linux RedHat, Embedded Linux (Monta Vista), Solaris (32/64bits), VxWorks, AMX, Nucleus, PSOS+, OSE, RTC, VRTX, ...

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