claim: Telephone consists of an expanded musical element.
evidence: SDN can stand for  :. Software-defined networking , an approach to computer networking. Software-defined networking. Software-defined networking. S4C Digital Networks , a company that operates television channels in the United Kingdom. S4C Digital Networks. S4C Digital Networks. SAP Developer Network , an online community. SAP Developer Network. SAP Developer Network. Sandane Airport , Anda , Norway. Scottish Daily News , a newspaper published in 1975. Scottish Daily News. Scottish Daily News. Scottish Digital Network , a planned new broadcaster and online services provider. Scottish Digital Network. Scottish Digital Network. Sexually dimorphic nucleus , a cluster of cells in the brain. Sexually dimorphic nucleus. Sexually dimorphic nucleus. Specially Designated Nationals , individuals and organizations with whom United States citizens and permanent residents are prohibited from doing business. Specially Designated Nationals. Specially Designated Nationals. Student Doctor Network , an educational organization for prehealth and health professional students in the US and Canada. Student Doctor Network. Student Doctor Network. Subdeacon , a title used in Christianity. Subdeacon. Subdeacon. Sudan , a country in Africa. Sudan. Sudan. League of Nations , Societe des Nations in French. League of Nations. League of Nations. Serial Date Number is sometimes used to refer to Julian day , which is the count of days since January 1 , 4713 BC -LRB- in proleptic Julian calendar -RRB- .. Julian day. Julian day. proleptic Julian calendar. proleptic Julian calendar. Sanctissimus Dominus Noster -LRB- `` Our Most Holy Lord -LSB- Jesus Christ -RSB- '' , also a title of the Pope -RRB-