NMS Communication AccessGate 500 - Wireless Access Network Product


NMS is a leading provider of communications technologies and solution enabling enhanced services and efficient networks that help our customers grow their revenues and profits

NMS AcceessGate 500 is a new wireless access gateway for radio access networks (RANs). It is designed to be located one gateway at the radio cell site and another complementary gateway at the mobile switching gateways (See diagram below).

AccessGate 500 provides up to 2:1 bandwidth savings (see diagram above), drastically lowering operating expenses and allowing wireless operators to recover their investment in approximately 12 months. AccessGate is specifically designed for radio access networks (RANs) and consists of gateways installed at the mobile switching office (MSO) that are connected to gateways deployed in the cell sites.

It uses channel aggregate and bandwidth reduction techniques enable wireless operators o maximize network utilization, resulting in significant reduction in costs while preserving call quality. Both 2G and 3G mobile traffic can be compressed from multiple cells site onto a TDM backhaul to an NMS access gateway. NMS AccessGate reduces the number T1/E1 connections to the MSO. These systems are designed to address the critical requirements of telecom operators. With a common backhaul, provisioning and management is easy and these gateway systems work with the operator's existing management infrastructure.

AccessGate 500 wireless access gateway has achieved interoperability approval from Nortel Networks. Testing was done using GSM infrastructure equipment located in Nortel Networks Wireless Interoperability Lab in Richardson, Texas. It is an ideal solution for telecom operators who have GSM networks with more than one E1 or T1 line to a cell site. In additional, the AccessGate 500 is also valuable for telecom operators with plans to migrate to 3G.

 Features  Opex Savings Benefits  Cost-saving Techniques
 Recovers bandwidth

Reducing radio access T1/E1 bandwidth needs per cell site:

 - Eliminates one or more T1/E1s
   in the backhaul
 - Reduces monthly OpEx costs
 - Allows for the addition of new    services, such as GPRS
 - Saves bandwidth up to 2:1
 - Provides ROI in about 12 months


 - Recovers bandwidth from silent voice
   segments using intelligent GSM
   TRAU/PCU processing, Abis frame
   detection, and analysis of the    uplink/downlink for idle TRAU channels
 - Efficiently consolidates TDMA traffic    using subchannel multiplexing
 - Detects and recovers bandwidth not
   used by TRX signaling channels using
   dynamic processing and analysis of
   DS0s at 16 kbps sub-channel level
 - Preserves voice call quality by supporting
   less than 10 ms end-to-end latency;
   preserves handset encoding by making
   no changes to the voice payload

 Maximizes transport
 - Eliminates the CapEx and OpEx of
   additional grooming equipment
 - Optimizes multiplexed GSM channels
   onto a common radio access
   backhaul; recovers stranded DS0s
   and replaces current DS0 circuit
   grooming equipment using T1/E1
 Aggregates 3G and 2G
 - Aggregating 3G access links on
   the same T1/E1 GSM service trunks
   eliminates the need for separate
   T1/E1 backhaul for 3G networks,
   reducing OpEx costs.
 - Eliminates the need for specific
   T1/E1 transport trunks for 3G traffic
   by combining 3G Iub onto same
   back-haul as GSM and TDMA 2G
 - Allows 3G UMTS to be added to
   existing 2G infra-structure,
   especially important in single
   T1/E1 connected 2G sites