[Asterisk-Users] SIP, NAT & Asterisk

[Olaf Menzel]

Hi all,
--------
beacause I am a newbie in the asterisk ralm and the existing documentation 
could not satisfy I'd like to ask you some Questions:

1. Does somewhere in the Internet exist additional documentations for asterisk 
configuration ?

2. Does Asterisk work as a standard SIP Proxy ?

3. I am just installing a Asterisk PBX in our institute and additionally I 
purchased some ot the Snom 100  SIP devices. For SIP account I have 
registered with iptel.org and fwd.pulver.com. Both work fine with the Snom 
100 device. I tried the Snom 100 from home via a Linksys DSL router wich 
supports UPnp and port range forwarding to the private network. I faced some 
troubles with registering the Snom with IPTEL.ORG from my NAT'ed network. 
Because I'd like to setup a Asterisk PBX to my private Network as well my 
approach is to connect the SNOM to the asterisk at home network and establish 
a server-server connection via IAX to the institutes Asterisk server. The 
institute's Asterisk can login at iptel.org and fwd.pulver.com. If soembody 
wants to call me he should first try to reach me at my Snom phone at 
institutes premisses and after a defined time this call should be forwarded 
to my home asterisk server to reach the SNom 100 at home.  BTW - for calling 
out I want to use the AVM Fritz ISDN card with ISDN4LINUX. I could not find 
any doc for Asterisk- ISDN4LINUX configuration.  Later I'd like to upgrade to 
a Digium device to support conferencing. Wich of the Digium's devices you 
propose for a normal EuroISDN line (2 B-channels) ? I have attached a small 
figure for my SIP configuration aaproach.

 
Thank you for your help

regards

Olaf


-- 
Dipl. Ing. Olaf Menzel - System Engineer
FOKUS - Fraunhofer Institute for Open Communication Systems:
- Competence Center for Advanced Satellite Communication
Schloss Birlinghoven, 53754 Sankt Augustin, Germany
Phone: +49-2241-14-3494   Mobile: +49-175-2616161    Fax: +49-2241-14-43494
email: olaf.menzel at fokus.fhg.de       Internet: http://www.fokus.fhg.de/satcom
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