something About roaming

Well there is a serious concern going on about roaming in the telecom industry.
so when sip is gaining(or already gained) momentum,do you think roaming will survive.
have a look here........


http://www.totaltele.com/View.aspx?ID=82089&t=4

Know Asterisk

What did you say reading my previous post?Dont know about asterisk?Well asterisk
is an open source IP PBX.To describe it features it would take a lot of space so I suggest you to go to....
www.asteriskdocs.org

or

www.asteriskguru.com

One of the most common problems discussed within the Asterisk community is the upper bound for number of calls for a single Asterisk server. John Todd yesterday issued a challenge on the asterisk-dev mailing list.You can view the challenge here....
http://www.voip-forum.com

rfc4458

Session Initiation Protocol (SIP) is used in many services just
to initiate connections to applications such as voicemail or interactive voice
recognition systems. The specification describes a convention for
forming SIP service URIs that request particular services based on
redirecting targets from such applications...
http://www.rfc-editor.org/rfc/rfc4458.txt