A modular telecommunication jack adapter has a front part formed by at least one standard modular telephone jack and a rear part defined by a standard modular telephone plug. The front and rear parts are connected by a coupling member which defines a rearward extension of the modular jack. A plurality...http://www.google.es/patents/US5328390?utm_source=gb-gplus-sharePatente US5328390 - Modular telecommunication jack adapter
