INTRODUCTIONINT-24MG(PRI) (1.5M) [SCA-24PRIA/MG-24PRIA]MG(PRI) [SCA-24PRIA/MG-24PRIA] is a media gateway between ISDN network and IP network to providea Primary Rate Interface (T1) through interaction with the system. MG(PRI) is controlled by the TelephonyServer, and a variety of services can be performed.MG(PRI) (2M) [SCA-30PRIA/MG-30PRIA]MG(PRI) [SCA-30PRIA/MG-30PRIA] is a media gateway between ISDN network and IP network to providea Primary Rate Interface (E1) through interaction with the system. MG(PRI) is controlled by the TelephonyServer, and a variety of services can be performed.MCMG [SCA-4LC2COTA/MG-4LC2COTA]MCMG [SCA-4LC2COTA/MG-4LC2COTA] has two functions, Media Converter (four lines) and Media Gate-way (two lines). Media Converter (MC) is an interface providing media conversion between internet protocol(LAN-side) and conventional voice data (the MC-connected conventional terminal-side). Media Gateway (MG)is an interface between IP network and Analog PSTN line. Also two ports of MC will work as PFT ports whena failure occurs. MC and MG usually work independently. In the case of some failure including IP link failure,PFT connects C.O. line (MG side) and analog telephone (MC side) directly and provides emergency line.MG-SIP16 [SCA-16SIPMGA/MG-16SIPMGA]MG-SIP16 [SCA-16SIPMGA/MG-16SIPMGA] is an Media Gateway to provide the system with Session Initi-ation Protocol (SIP) interface. It enables the system to build a multi-service and reliable Voice over IP (VoIP)networks using SIP defined by IETF. Up to 16 channels of extensions in the network can communicate withoutside SIP network via an MG-SIP16 at the same time. As MG-SIP16 complies with small and middle sizedremote offices flexibly, more offices can profit Peer-to-Peer VoIP services using IP station.MG(PRI) (1.5M) Card [SCA-24PRIA]B DALMPWRONLINE LBLINEEther100M LINK CONSOLERESETMUSICMG(PRI) (1.5M) Box [MG-24PRIA]B DALMPWRONLINE LBLINEEther100M LINK CONSOLERESETMUSICB DALMPWRONLINE LBLINEEther100M LINK CONSOLERESETMUSICMG(PRI) (2M) Box [MG-30PRIA]MG(PRI) Card [SCA-30PRIA]B DALMPWRONLINE LBLINEEther100M LINK CONSOLERESETMUSICMCMG Box [MG-4LC2COTA ]MG1 MC1 MC3MGMCMG0 MC0 MC2ALMPWREtherOPERATIONMG0 MC1MC0 MC2 MC3MG1ONLINE100M LINK CONSOLE PFTRDRESETMUSICMCMG Card [SCA-4LC2COTA]MG1 MC1 MC3MGMCMG0 MC0 MC2ALMPWREtherOPERATIONMG0 MC1MC0 MC2 MC3MG1ONLINE100M LINK CONSOLE PFTRDRESETMUSICALMPWRONLINEEther 1 Ether 2100M LINK100M LINKRESETCONSOLEMG-SIPALMPWRONLINEEther 1 Ether 2100M LINK100M LINKRESETCONSOLEMG-SIPMG(SIP)16 Card [SCA-16SIPMGA] MG(SIP)16 Box [MG-16SIPMGA]