"Voice communications networks and IP data networks have almost nothing in common beyond being networks: IP networks are packet switched, while voice networks a

Session Initiation Protocol (SIP), standardized by the Internet Engineering Task Force (IETF), has emulated the simplicity of the protocol architecture of hyper

IP Telephony has revolutionized many aspects of telecommunications and it continues to be deployed at a rapid pace. The benefits of transporting voice over an I

LDAP is the protocol at the heart of universally interoperable directory services applications. All major directory services products-including Novell's market-

A communication engineer's guide to the IP call processing protocols which set up and tear down voice/data/video calls over the internet. Covers both US and eur