| VCL-SafeCommTM,
8 T1 Links (24 T1 Ports) (1+1
Automatic Protection Switch)
Product Description
|
The VCL-SafeComm, 8 T1 Links (24 T1
Ports), 1+1 Automatic Protection Switching (APS) Equipment may
be used to protect upto 8 T1 Links (24 T1 Ports), point-to-point
links and provide an alternate communication route to |
|
| |
|
each T1 Link between any two T1 points. |
In the event of the
failure of the primary (Main) T1 communication route, the VCL-SafeComm,
8 T1 Links (1+1 Automatic Protection Switching Equipment)
automatically switches the T1 traffic to a secondary (standby) T1
route. The VCL-SafeComm, 8 T1, 1+1 Automatic Protection Switching
equipment is available in a 2U high chassis which may be mounted in
any DIN standard,19-Inch rack.
This product allows the user to
design 1+1 (protected) redundant T1 routes on similar (fiber-fiber)
or complementing (fiber-radio) transmission mediums.
The criterion for switching between
the primary (main) and the secondary (protected/standby) routes is
user programmable.
Criterion for switching between the
primary (main) and the secondary (protected/standby) routes may be
Loss-of-Signal on T1 links or AIS (All-Ones AIS alarm) condition.
The criterion for switching time and recovery time between the
primary (main) and the secondary (protected/standby) routes is user
programmable.
Data transported on the T1 Links is
transparent and protocol independent.
Applications
Providing 1+1 alternate paths
between any two Transmission mediums (active+standby). e.g:
- Fiber/Fiber
- Radio/Fiber
- Radio/HDSL
- Fiber/HDSL etc.
Example:
The user may deploy the VCL-SafeComm, 8 T1, 1+1 Automatic
Protection Switching Equipment to provide an alternate communication
route between an optical fiber link and a radio link between any two
points. In the event of the failure of the primary (optical fiber)
link the T1 is automatically switched to the alternate route over
the T1 radio, thus ensuring maximum uptime on all such 1+1 protected
T1 Links.
Once the primary (optical fiber) T1
Link on the optical fiber is restored, the VCL-SafeComm, 8 T1, 1+1
Automatic Protection Switching Equipment automatically restores the
communication to the primary (optical fiber) T1 Link. The switching
and restoration criterion is user programmable.
Applications
Diagram
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Features &
Highlights
- High density
protection switching equipment (upto 8 T1 Links i.e. 24 T1 Ports)
- To provide an
independent point-to-point, protected T1 Link between two "T1 USER
PORTS" on similar (example fiber-fiber), or dissimilar
(fiber-radio) mediums
- To provide 1+1 T1
redundancy support to higher order multiplexers e.g. E2, E3
- System
configuration and management interface through "CLI" text based
commands
- Transport A-bis
Interface on redundant T1 links
- Provide 1+1
Protection Routing / Path between BSC and BTS
- These ensure that
mission critical voice, data, control and management traffic are
properly supported and maintained even during T1 backhaul facility
outages. When the primary (working) link fails, the T1 traffic is
automatically switched to the standby (secondary) link to ensure
maximum uptime
- Through the
comprehensive remote configuration and alarm management
capabilities of the VCL-SafeComm, 8 T1, 1+1 Automatic Protection
Switching Equipment the product may be used to improve network
reliability and control
- Traffic Protection
- Alternate Facility
Advantages
- Service
Differentiation Agreements
- Increased Network
Reliability Resilience
- Media and Path
Diversity
- Remote Management
- Alarm logging and
monitoring.
Benefits
- Customer Relations
- Competitive
- Service Level
- Back-haul Network
- Technology Migration
- User Programmable 1+1 Protection
Parameters:
- Loss of Signal
- AIS (All Ones Alarm)
Technical Specifications
T1 Interface
|
Number of
Interfaces |
Total 24 T1
interfaces
8 for Main T1 Links.
8 for Primary T1 Links.
8 for Secondary T1 Links. |
| Line
Rate |
T1 –
1.544 Mbps |
| Line
Code |
B8ZS,
AMI (automatic selection) |
| Frame
Structure |
SF, ESF
(automatic selection) |
| Bit
Rate |
1544
Kbps ± 50 ppm |
| Jitter
Tolerance |
As per
ITU-T G.823 |
| Output
Jitter |
< 0.05
UI (in the frequency range of 20 Hz to 100 Khz) |
| Pulse
Mask |
As per
ITU (CCITT) Rec. G.703 |
|
Conformity (electrical) |
G.703 |
| Nominal
Impedance |
100
Ohms, balanced |
Clock
Transparent between the two points of the T1 Links.
Management and Control
- Serial Management Port (RS232) - COM Port
- 10/100 BaseT for Remote Management over a LAN
- 10/100 BaseT Telnet over a TCP-IP Network
Specification and Regulation Compliance
- Meets CE requirements
- Complies with FCC, Part 68 and Part 15 subpart A
specifications
- Safety - UL 1459 Issue 2
Command Language
Command Line Interface (English text commands)
Alarm Contact Closures
1 Alarm Relay,
Type - Form "C" relay
Temperature
Operating 00C to 500C
Humidity 5% to 95% non-condensing
Dimensions and Weight
| Rack
mounting |
Standard 19-Inch. DIN Rack |
| Height
|
44.00
mm. |
| Depth
|
260.00
mm. |
| Width
|
477.00
mm. |
| Weight |
4.00
kg. |
AC Power Supply Specifications
| Output
voltage of AC Adapter |
100 -
240 Volt AC |
| Range
of input AC voltage |
100 V
to 240 V AC, 50Hz / 60Hz. |
| System
input voltage |
7.5 V
DC to 9.0 V DC, DC input polarity protection. |
| Maximum
full load output current |
2.5 A
at 7.5 V DC/9.0 V DC |
| Input
voltage reversal protection |
Provided in the Card |
|
Efficiency at full load |
>86% |
DC Power Supply Specifications
| Input
DC voltage |
-48V DC
(nominal) |
| Range
of input voltage |
-40V to
-60V DC |
| System
voltage |
+ 3.3V |
| Input
voltage reversal protection |
Provided in the Card |
| Short
circuit protection |
Provided |
|
Power Consumption |
< 10W |
|
