Telephone,numbering,plan
A,telephone,numbering,plan,is,a,type,of,numbering,scheme,used,in,telecommunication,to,assign,telephone,numbers,to,subscriber,telephones,or,other,telephony,endpoints,Telephone,numbers,are,the,addresses,of,participants,in,a,telephone,network,,reachable,by,a,system,of,destination,code,routing,Telephone,numbering,plans,are,defined,in,each,of,administrative,regions,of,the,public,switched,telephone,network,PSTN,and,they,are,also,present,in,private,telephone,networks
Numbering,plans,may,follow,a,variety,of,design,strategies,which,have,often,arisen,from,the,historical,evolution,of,individual,telephone,networks,and,local,requirements,A,broad,division,is,commonly,recognized,,distinguishing,open,numbering,plans,and,closed,numbering,plans,A,closed,numbering,plan,imposes,a,fixed,number,of,digits,to,every,telephone,number,,while,an,open,numbering,plan,allows,variance,in,the,numbers,of,digits,Many,numbering,plans,subdivide,their,territory,of,service,into,geographic,regions,designated,by,an,area,code,,which,is,a,fixed-length,or,variable-length,set,of,digits,forming,the,most-significant,part,of,the,dtelephone,numbering,plan,,north,american,telephone,numbering,plan,,united,kingdom,telephone,numbering,plan,,telephone,numbering,plan,pdf,,india,telephone,numbering,plan,,qatar,telephone,numbering,plan,Telephone,numbering,plan
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