PSPX21 :
X21 over IP/VLAN
This module allows X21 leased line creation :
- trough an Ethernet L3-IP networks.
- trough an Ethernet L2-VLAN networks
The choice between
the 2 modes is made by a simple mouse click trough the browser.
In IP mode, PSPX21 manage L3 layer conform to IPV4
In VLAN mode, PSPX21 manage L2 layer conform to 802.1Q and 802.1P
Case application :
X21 / IP satellite
connection
Benefits :
PSPX21 allows to maintain operational X21 equipments without any re-configuration making easy migration to Ethernet technology deploy inside company or operators new services.
Technical specifications
Network Interface :
universal
Ethernet : 10
Base T, Half duplex
network protocol : L3 IP, IPV4
: L2 VLAN, Tag 802.1P / 802.1Q
: Ethernet frame re-sequencing
: bandwidth optimization
Link Back-up : (click
on image to zoom)
a/ In VPN-IP mode ........... 
Using network protocols like OSPF or BGP
b/ In VPN-VLAN mode ....... 
Using Quadrillium back-up service based on link monitoring
X21 User Interface :
ETCD mode (transparent for C & I)
Rates : 19-2, 64, 128, 192, 256, 384, 512,768, 1024, 1536, 1920 kbit/s
Connection : sub-D 15 points F, ISO4903
circuits : G, T, C, R, I, S , (X option)
operation : comply ITU - X24
electrical : comply ITU - V11
Loops 2 & 3
Management
:
PSPX21 equipments are managed by a web browser.
It is possible to manage the entire
link (local and remote equipments).
Connection
is made :
- local & remotely trough an "in-band" connection on Ethernet network link
