Description
| The 4 x VCL-T1 over Ethernet multiplexer (TDM
over IP) product is used to provide upto 4, T1 communication channels over
Ethernet or IP networks. This product transmits information at T1
(1544kbit/s). 2x
VCL-E1 over Ethernet multiplexer (TDM over IP) is also available. To transport T1 channels over an Ethernet or an IP network, and to
accelerate traditional telecom services to migrate to the IP packet
networking technology, the 4 x VCL-T1 over Ethernet multiplexer product uses
TDM over IP technology. This solution transports the legacy T1 data through
the existing Ethernet or IP network. |
|
4 x VCL-T1 over Ethernet multiplexer product is the new generation of the
TDM over IP equipment with IP circuit emulation that supports transportation
of four T1 and two local Ethernet ports over an Ethernet or an IP network.
The uplink Ethernet ports and user data port are IEEE 802.3 compliant, 10 /
100BaseT auto-sensed ports.
The state-of-art design provides the highest availability with the accurate
timing signal and data bit stream reconstruction. Predefined system
parameter profiles that according to different application requirement,
ultimately simplify the installation process and saving the maintenance
cost.
Telecom and Enterprise users can save a lot of access and equipment costs
and generate new revenue resources by offering different types of legacy
services over Ethernet networks. It is also suitable for connecting to the
Ethernet based wireless equipment to achieve fast deployment of T1 services.
One particular application is to provide a combination of Ethernet and T1
services using low cost Wireless LAN bridges, or over RPR Ethernet rings.
Operators can use the 4 x VCL-T1 over Ethernet multiplexer to provide a
provide a combination of Ethernet and legacy T1 (TDM) services over wired or
wireless packet networks, or RPR rings.
TDM technology occupies fixed transmission bandwidth which is suitable for
real-time applications such as voice and video. Ethernet technology is based
on statistical multiplexing, transmitting and exchanging information in
packets. It does not take up a fixed transmission bandwidth, which is good
for achieving higher bandwidth utilization. But Ethernet technology does not
provide adequate QoS for real time applications.
The 4 x VCL-T1 over Ethernet can be used to emulate transparent T1channels
over an Ethernet link with an acceptable QoS (Please see the note: QOS,
below), so that a majority of the existing T1 based applications can be
readily setup over Ethernet LANs and WANs.
(Note: QOS shall depend on the quality of the Ethernet link and packet
losses)
Features
- Four T1 ports supported, T1 or E1 easily
selected by Web Manager.
- User-friendly Web server supported for
easy setup and maintenance.
- Point to point and point to multi-point
application supported.
- Uplink ports : 1+1 backup supported.
- Stable T1 clock recovery, low jitter and
wander.
- Low processing delay for T1 channels, high
bandwidth usage efficiency.
- Resist to packet loss, with PCM frame
synchronization protection.
- User definable encapsulation packet size
for different application.
- Enough jitter buffer to resist packet
delay variation (PDV).
- Local Ethernet port throughput limiting,
assuring T1 QoS.
- Local and remote T1 LOS and AIS and packet
loss indication for trouble-shooting and maintenance.
- Support cascade concatenate for more than
4 T1 ports.
Application
4 x VCL-T1 over Ethernet is used to setup 1
to 4 clear T1 channels over LAN or IP networks, as depicted in Fig. 1 and
Fig 2.
Point to Point 4x VCL-T1 over Ethernet
Application Diagram
|
 |
Figure 1
(a) Point to Point Application
Point to Multipoint 4x VCL-T1 over
Ethernet Application Diagram
Figure 2
(b) Point to Multipoint 4 x VCL-T1 over Ethernet application
In the figure, a pair of 4 x VCL-T1 over
Ethernet multiplexers create clear T1 channels over the packet network,
providing connections between the PBX and telephone exchange, or other
terminal devices. At the same time, computers connect to each other through
the local Ethernet ports on the 4 x VCL-T1 over Ethernet multiplexers. This
configuration guarantees that the T1 channels get higher priority over
computer data for maximum QoS.
The most widely used application of 4 x VCL-T1 over Ethernet multiplexers is
to set up point to point wireless T1 links using low cost wireless LAN
bridges or Ethernet RPR fiber links. 4 x VCL-T1 over Ethernet multiplexers
can work with most LAN bridges available in the market. It may be necessary
to adjust different parameters such as packet size and packet jitter
absorption buffer size for best operation for different LAN bridges.
Product: VCL TDMoIP-EthMux
x 4T1-xx
|
User Interfaces |
Ethernet Uplink Port
|
Complies with IEE 802.3 |
| T1 Port(s) |
4 T1, or 4 E1 ports. Comply
with ITU-T G.703. |
| User (Local)
Data Port(s) |
2 x 10 / 100BaseT Ethernet
Local User Data ports. Comply with IEEE 802.3
10 / 100 Mbps auto-sensed. Full / Half duplex auto-sensed |
Technical Specifications
|
T1 Interface |
| Line Rate |
T1 (1.544 Mbps ±
50 bps) |
| Available
Time-Slots |
1-24 |
| Framing
|
As per ITU(CCITT)
G.704 |
| Framing Options
|
D4, ESF
(Selectable) |
| Line Coding |
AMI, B8ZS
(Selectable) |
| Electrical
|
ITU-T G.703 |
| Jitter
|
ITU-T G.823, ITU-T
1.431 |
| Impedance
|
100 Ohms |
| Connector
|
RJ-45 (F) |
Configuration and Monitoring
HTTP Web Manager
SNMP
Power Supply Options
|
Power |
Supply |
-48V DC, or 220V (110V) AC,
and dual power supply options. |
| Consumption |
+<10W |
Environmental
|
Environmental |
Temperature |
00C 500C |
| Relative Humidity |
<90% (non-condensing) |
Mechanical
| Dimension |
W x H x D (mm): |
440 x 44 x 320 |
Ordering Information
| Model Number / Ordering
Code |
Description |
| VCL TDMoIP-EthMux x 4T1-DC |
2 Uplink Port (1+1), 4 T1, 2
user data port |
| VCL TDMoIP-EthMux x 4T1-AC |
2 Uplink Port (1+1), 4 T1, 2
user data port |
| VCL TDMoIP-EthMux x 4T1-Dual |
2 Uplink Port (1+1), 4 T1, 2
user data port |
Compliance and
Regulatory
Operation ETS 300 019 Class 3.2
Storage ETS 300 019 Class 1.2
Transportation ETS 300 019 Class
2.3
CE
Others Links
Technical specifications are subject to change without
notice.
All brand names and trademarks are the property of their respective owners. |
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