Donohue, Denise <br/><br/>
Cisco voice gateways and gatekeepers 

 -  New Delhi  Pearson Education  2007 
 - xxix, 619p. : ill.   
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9788131718100 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cisco voice gateways<br/>GW/GK  VoIP networks<br/>IP WAN<br/>Media gateway control protocol<br/>MGCP<br/>Voice gatekeepers<br/>Voice gateways<br/>VoIP Networks