which as a result is able to engage a recess in a cellular telephone or other object a button 16 is provided to release the locking mechanism which button releases the engaged locking elements 15 and uses a spring to enable the pivotable section of strip 17 to pivot back into the starting position in addition projections 18 are molded on to telephone holder 1 which facilitate locking of the cellular telephone or adapter and prevent these items from slipping out of the lock at the top 0026 fig2 a through 2c show telephone holder 1 including an adapter 2 according to the invention adapter 2 includes a contact strip 20 which is able to engage contact elements 10 and 11 of telephone holder 1 adapter 2 is has essentially a box like shape a circuit board being enclosed within the plastic case of the adapter in the rear side facing telephone holder 1 in addition a jack 22 is provided in adapter 2 into which jack antenna plug 12 may be inserted in the opposite side walls of adapter 2 recesses 23 are provided which locking elements 15 of telephone holder 1 are able to engage the rear side of adapter 2 has a support strip 29 which is able to rest on strip 17 of telephone holder 1 a recess 24 is then provided adjacent.