14.5.3.1. Initial Situation 
Key parameters:
|
Endpoint/Description
|
DN name/Phone number
|
IP address
|
|
SIP registrar / proxy
|
sip.iandc.training.com
|
2.3.3.124
|
|
DNS - service provider
|
iandc.training.com (domain name)
|
2.3.3.123
|
|
STNO carrier connection / HG 3500-1
|
+49180130100
|
3.3.3.11
|
|
STNO carrier connection / HG 3500-2
|
+49180130200
|
3.3.3.22
|
HG 3500 direct to SIP carrier
Subsequently, the following case should be configured. The HG 3500
of OpenScape 4000-1 should be set up as a native SIP gateway and register
at the service provider. Registration should be performed using the phone
number of the SIP system connection (+49180130100).
Another OpenScape 4000-2 from another customer has registered on the
service provider. This system has the system number +49180130200 and
a four-digit extension range. This system should be the dialing destination
for the OpenScape 4000-1 node in this scenario. Thus only one specific
phone number is routed via the SIP carrier connection instead of all
phone numbers.
This section only explains configuration in the OpenScape 4000-1 system.
Configuration of the OpenScape 4000-2 system is almost identical, so
this is not described.