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ETSI ES 202 718
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ETSI ES 202 718 Speech and multimedia Transmission Quality (STQ); Transmission Requirements for IP-based Narrowband and Wideband Home Gateways and Other Media Gateways from a QoS Perspective as Perceived by the User
standard by European Telecommunications Standards Institute, 07/01/2017
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Full Description
ETSI ES 202 718 provides speech transmission performance requirements for narrowband and wideband mediagateways from a QoS perspective as perceived by the user. Media gateways can be network or home based, they mayinclude a transcoding function. The present document covers the following types of IP-based media gateways: ATA (Analogue Terminal Adapter), home gateway IP to POTS ITA (ISDN Terminal Adapter), home gateway IP to ISDN IAD (Integrated Access device), home router including ATA or ITA Network based ATA and ITA Carrier grade media gateway, network gateway IP to TDM IP-to-IP media gateway, network gateway with transcoding and/or other media processing New Generation DECT Fixed part with IP interface (only parameters not covered by New Generation DECT)Interfaces of media gateways used together with terminals as a system (i.e. connected via Ethernet or with a proprietaryinterface) are excluded in the present document and should be measured according to the relevant terminal standard.If a media gateway includes more than one interface type (e.g. POTS and ISDN), each interface has to be dealt withdifferently.
The requirements available in the present document will ensure a high compatibility with IP-and TDM-based fixed andwireless terminals and networks, including DECT and mobile terminals.
It is the aim to optimize interoperability, the listening and talking quality and the conversational performance. Relatedrequirements and test methods are defined in the present document.
The present document does not apply to media gateways with 4-wire analogue interfaces.
The requirements for MGWs with respect to voiceband data (VBD) are out of scope in the present document. Theserequirements are covered in TS 102 929 [i.7].