ASCOM Ascotel 2025 - Page 89

ascom Ascotel 2025/2045/2065
1.34 Networking the Systems HBT_20321104_01/B0_en
4.2.5 Virtual Networking with a Virtual PBX (Centrex)
Some network providers offer a private numbering plan (PNP) as a service.
Together with ISDN supplementary services, e.g. rerouting services, this means
that the customer has a virtual PBX at his disposal. Some network providers mar-
ket this facility under the name Centrex while others use the general term VPN
(Virtual Private Network).
A virtual PBX can easily be integrated as a PINX in a PISN. The system supports
private numbering plans and incorporates them seamlessly into its own network
functionality.
[1] Connection to the public network
[2] Virtual connection between two PINXs
[3] Physical connection to a virtual PBX in the public network
[4] Virtual connection between a virtual PINX and the public network
Fig. 1.21: Example of a virtual network with a virtual PBX
PISN
Public network
[2] [3]
[3]
[4]
[1]
[1]
PINX 3: Virtual PBX with PNP
PINX 3
PNP
PISN
haz0655aaena0
PINX 1
PINX 2
PINX 2PINX 1