VoIP=Voice Over IP, which is the process of converting an analog or digital voice signal that originated from either an end device (analog phone, PBX) or the PSTN and converting it to a digital stream, breaking that stream into manageable chunks, and transporting it to a destination inside IP packets. At the destination, the packets are decoded, and the original audio stream will be reassembled and sent out to a phone, pbx or back to the pstn.
A call that is initiated on an IP phone to another IP phone is still considered VoIP. Your voice enters the microphone of the handset as an analog signal, then it is sent to the Digital signal processor of the phone which converts voice to a digital audio stream, breaks it into manageable size chunks and encapsulates it into an IP packet. The IP packet is sent to the other phone, the procerss is reversed and an analog signal is played out of the speaker in the handset.
A true VoIP router is a router that does the actual processing of converting the analog or digital signal to an IP packet. Any router can then route the IP packet, without being voice-aware (keep in mind Qos). Almost any cisco router can do VoIP, from the 1700 series up....
Call Manager is actually considered IP Telephony. CM uses VoIP to transport the actual audio stream, but "Telephony" is all of the "extra" features that a phone system needs like Hold, Conference, Transfer, Voicemail, etc....
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...