TY - BOOK ID - 135796516 TI - VoIP/Internet telephony. PY - 2006 PB - [Washington, D.C.] : Library of Congress, Science, Technology & Business Division, Science Reference Services, DB - UniCat KW - Internet telephony UR - https://www.unicat.be/uniCat?func=search&query=sysid:135796516 AB - ER -