1. SIP/RTSP based unified messaging
sipum
SIP/RTSP based unified messaging
Voic and answering machine
Integrates with Internet telephony, web and

2. Campus/corporate network Application - within a domain
sipum
Campus/corporate network
sipd
sipum
rtspd
Application - within a domain

3. Application - external service provider
sipum
sipd
Internet
e*phone
Application Service Provider
sipum
rtspd
Application - external service provider

4. sipum sipd How does it work ? After 10 seconds v-mail contacts the
sip1.cs;
Kns10
How does it work ?
INVITE
CANCEL
INVITE kns10-voic
user1
sipd
to kns10
INVITE
200 OK
RTP/RTCP
INVITE
200 OK
RTP
Quick-time
RTSP
v-mail
vm.cs;
SETUP
SETUP/PLAY
After 10 seconds v-mail contacts the
RTSP server for recording.
Kns10 can listen to voice mail using either
a RTSP client like quicktime or ...
Once the call is closed by user1, v-mail sends an
to kns10 informing the arrival of a voice mail
Now user message gets recorded
rtspd
Sipd forks the request to kns10’s phone and voic .
Sipd cancels the other branch and ...
...accepts the call from user1.
V-mail accepts the call.
User1 calls through sipd.
...by calling the v-mail

5. sipum
Web and integration !!

6. sipum http://www.cs.columbia.edu/~kns10/software/sipum
What’s more ?
Video and fax can be integrated
Can use SIP-CGI