E1 Channel Bank multiplexer for
terminating
Long Distance Traffic.
- September 1, 1999
Valiant's
VCL-30, 2Mbps E1 Channel Bank multiplexer may be used for terminating long distance
traffic with PSTN lines that SHALL SUPPORT, or, DO NOT SUPPORT "battery reversal /
polarity reversal" (answer supervision).
- The VCL-30, E1 channel banks are available in two versions:
- VCL-30 can be used with PSTN lines that SHALL
SUPPORT "battery reversal / polarity reversal" (answer supervision).
- VCL-30 "spoofs" battery reversal /
polarity reversal (answer supervision), and can be used with PSTN lines even if they SHALL
NOT SUPPORT "battery reversal / polarity reversal" (answer supervision).
- The first version of the VCL channel bank version is one which
expects a "battery reversal / polarity reversal" condition on the analog line
when the call is ANSWERED by the CALLED PARTY. The VCL channel bank
shall feed the call answered bits to the E1 side so that the billing server may commence
its billing. This happens as soon as the call is ANSWERED by the CALLED PARTY and the PSTN
initiates a "battery reversal / polarity reversal" on the analog line.
However, if the PSTN lines are NOT SUPPORTING "battery reversal / polarity
reversal" the VCL channel bank shall automatically, based on the statictical analysis
of a circuit usage, extend the call answered bits to the E1 side, so that the billing
server may log the call and commence billing. This is particularly useful in an
environment where the PSTN analog lines DO NOT SUPPORT "battery reversal / polarity
reversal", which would be otherwise required for commencing the call metering /
billing.-
- VCL-30 Access Multiplexer, E1 Network Access Multiplexer is an
ideal choice for Internet Telephony (Voice over IP) applications, ISP and Corporate
customers, who wish to connect their fully digital networks to the PSTN through the
available analog dial-up PTT lines.
-
- Valiant's VCL-30, 2Mbps E1 Channel Bank provides full range
of POTS (voice) and data interfaces including FXO, FXS, 2W/4W E&M, hotline (FXS-FXS),
V.35, Nx64 Kbps, G.703 (64Kbps Co-Directional), V.24 and V5.1.
-
- Valiant also manufactures a wide range of telecom transmission
solutions including voice compression, PRI ISDN multiplexers, digital cross connect
switch, E1 / T1 Channel Banks, E2 (4E1) Optimux, E3-PDH multiplexers, 34Mbps Optical Line
Transmission equipment (OLTE), ISDN, digital pair gain systems, Digital Loop Carrier
(DLC), Digital Cross Connect and Bandwidth Manager equipment.
Each product offered by Valiant is manufactured and tested under strict Quality Assurance
Program that is based on the ISO 9000 philosophy and principles.
Valiant's international offices, distributors and representatives are located in U.S.A.,
Canada, United Kingdom, Mexico, Brazil, Japan, China, Hong Kong, Korea, Indonesia,
Thailand, New Zealand, Finland, Argentina, Uruguay, Honduras, El-Salvador, Netherlands
Antilles, South Africa, Saudi Arabia, Kuwait, U.A.E., Jordan, Yemen and Bangladesh.
- For additional information please contact:
E-mail: Contact Us
-
- Sales Department:
Valiant Communications Limited
Address: 71/1, Shivaji Marg,
New Delhi - 110015, India
Phone: +91-11-41055601, 41055602, 41055603
Fax: +91-11-41055604, 25434300
Web Site: http://www.valiantcom.com
-
- VCL-30 is a Trademark of Valiant Communications Limited.
- © Valiant Communications Limited,
1997-2005. All rights reserved.
|
