CCITT Plenary Assembly (Red Book) Malaga-Torremolinos, 1984 :   Interworking of Signalling Systems, Recommendations Q.601-Q.685 : Fascicle /   Vol.VI.6 

 - Geneva :   ITU,   1984. 
 - IX, 171 s.;   30 cm. 
<br/><br/><label>ISBN: </label>9261021913