Russell, Travis. , <br/><br/>
Signaling system #7 / 
Travis Russell. 
 - 2nd ed. 
<br/><br/><label>ISBN: </label>0070580324(hc) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication --Switching systems.<br/>Signaling system 7.
<br/><br/><label>LC Class. No.: </label>TK5103.8   / .R87 1998