AXX11
Integrated Broadband Access Device with an excellent cost-benefit ratio
The AXX11 is an Integrated Access Device for use in fibre optic networks. AXX11 combines Ethernet/IP traffic, legacy data traffic and E1 traffic over SDH. The different kinds of traffic are mapped into VC-12 containers, and carried side by side in an STM-1 aggregate link. The device has two legacy data ports with V.36 physical interface. By external adapter cables, V.35 and X.21 interfaces are also supported.
The bandwidth of the IP-channel is configurable from 2Mbit/s to 100Mbit/s "wire-speed" in steps of 2Mbit/s, the carrier gets the flexibility to serve customers' needs, while transporting only the number of VC-12s actually containing traffic and being allocated to the customer.
Each E1 interface, up to 4, is mapped into a VC-12 container while the Ethernet traffic is mapped into a configurable number of VC-12 containers.
The two data ports support line-rates from 64 kbps to 2 Mbps in step of 64 kbps (Nx64kbit/s with N equal to all integer values from 1 to 32). It is possible to individually set the line-rate for the two data ports.
AXX11 is used in conjunction with AXXEDGE or AXX155A, and is not a standalone SDH network element (NE). It provides an overall low cost connection of end users. The AXX11 is managed remotely, via AXXEDGE or AXX155A, by a management system that supervises both the IP-and TDM-parts of the unit. However, the AXX11 is provided with a RS232 interface for local
supervision.
Main benefits
Price/performance:
AXX11 is a compact and flexible IAD and together with AXXEDGE or AXX155A, it provides a powerful and low cost concept for end user
connections.
Flexibility:
AXX11 offers great flexibility by combining
Ethernet/IP, E1s and data ports. All customer interfaces are based on open
standards. Existing infrastructure is utilized optimally by the flexible VC-12
allocation. AXX11 will aid the process to obtain a simple, powerful and cost-efficient
network.
Granularity:
Provisioning of IP bandwidth is obtained by using a number of VC-12 containers (1 to 50) in an inverse multiplexing scheme.
Density:
AXX11 is a compact device, providing high port density per unit, which means four times Fast Ethernet, four times E1 and two times V.35, V.36 or X.21. All this in 1RU.
Application
Provisioning of IP- and TDM traffic for end users
AXX11 must be connected to AXXEDGE or AXX155A. Connection is done in a star network
topo-logy. AXXEDGE or AXX155A is typically placed in the operator’s Point of Presence (PoP), while
the AXX11 is placed at the end user premises. AXXEDGE or AXX155A integrates the functionality
of an SDH-ADM, -DxC and Ethernet/IP switch/router and can consolidate up to 24 AXX11
units. AXXEDGE may also be used as a drop-shelf that is connected to an external ADM. Some examples
of traffic connectivity are indicated by light blue lines in the
figure
.
Interfaces
Interface view
| Aggregate |
TDM |
Ethernet
/ IP |
Data
Ports |
Miscellaneous |
One optical STM-1
interface
Short haul two fiber
G.826 performance
monitoring at RS, MS,
VC-4 and VC-12 level
|
4x2Mbit/s interfaces
G.703 Transparent leased line or ISDN PRA mode supported
Two test loops provided (towards customer or towards network)
|
4x10/100 BaseT Ethernet interfaces
Both 10Mbit/s and 100Mbit/s are supported with auto-negotiation
COS based on IEEE 802. lp priority and DiffServ TOS bits
Rate limiting
Auto crossover
Support of up to 1024 MAC addresses
|
2x nx64kbit/s interfaces
Interfaces can be individually set to support either V35, V.36 or X.21. The physical connectors are according to V.36. V.35 and X.21 are supported by use of a standard adaptor cable.
Line rates is supported in steps of 64kbit/s, Nx64kbit/s, where N = 1 to 32.
The data traffic are mapped into a G.703 based E1 signal before it is mapped into a VC-12 container for the 2 Mbit/s line-rate.
Two test loops provided (towards customer or towards network) |
4xAuxfflary alarm inputs - configurable alarm activation, open or closed contact
4xLED - Power, customer, operator, test - and LAN indicators
|
SPECIFICATIONS
| Electrical interfaces |
| 2
Mbit/s |
G.703 and ISDN
PRA |
| -
Bitrate |
2048kbit/s ±
50ppm |
| -
Line code |
HDB3 |
| -
Impedance |
120Om.
balanced, 75Om by external balun |
| -
Input jitter |
Acc. to ITU-T G.823 |
| -
Output jitter |
Acc. to ITU-T G.783 |
| -
Connector |
RJ45 |
| Ethernet/LAN |
10/100 BaseT
acc. to IEEE 802.3 |
| -
Connector |
RJ45 |
| Optical interface |
| Source type |
Laser diode |
| Wavelength |
1270-1335nm |
| Modulation |
155
520kbit/s |
| Launched
power (min.) |
-15dBm
|
| Min. overload |
OdBm (àll
variants) |
| Sensitivity |
-28dBm |
| Attenuation range |
0-
12dB |
| Dispersion |
280ps/nm |
| Connector |
LC |
| Power |
| DC |
-36VDC to -72VDC |
| AC |
external
AC power supply |
| Dissipation |
<16W |
| EMC/safety/Temperature |
| EMC |
EN 55022 ClassB and EN
50082-1 |
| Safety |
EN 60950 and EN 60825 |
| Operating temp. |
-5oC to +
45oC acc. to class 3.1E and 3.2 |
| Mechanics |
| Dimensions |
(HxWxD)
40x440x160mm |
| Weight |
<2
kg |
| MTBF |
| MTBF |
> 30 years
|
|
