Signaling Monitoring for QoS

RAD’s DXC Assures QoS and Reduces Network Maintenance through Cost-Effective Signaling Monitoring

Typical Users

Carriers
Cellular operators
Wireless operators
Utilities
Transportation

Typical Applications

Quality of Service
Network management
Surveillance

In a world driven by customer demand for Quality of Service (QoS) at a competitive price, delivering real-time information to network management systems is an essential element in every carrier network. Protocol analyzers can monitor the management and signaling data to detect problems before they affect customer service. These devices minimize network downtime and delays, improve QoS and increase overall network performance.

DXC saves costly switch ports and leased lines

RAD's DXC multiservice access nodes are a cost-effective method of centralizing network management and reducing traffic monitoring costs. Rather than installing expensive analyzers at small and medium-sized locations or sending management information from each E1 line over a separate link, the DXC concentrates up to 116 signaling timeslots and sends them to the protocol analyzer over fully utilized links.

The DXC is a complementary solution, enabling expansion of the existing monitoring method.
It seamlessly integrates with any other standards-based equipment.

The solution is based on a probe (passive T-sampler or patch panel) that duplicates the traffic on each voice channel and sends it to the DXC. The DXC extracts the signaling information from one or more timeslots of each voice channel and grooms all the timeslots onto one output E1, E3 or STM-1 line. The timeslots are sent to the network management station at the central or regional office for analysis. Data from these timeslots indicate the quality of the connection and also detect network faults. The lines that connect the DXC to the probe are configured as uni-directional, so as not to interfere with the voice traffic passing on the line.
Since the traffic is transparent to the DXC, it can support any signaling protocol, provided that the signaling information resides in the same timeslot(s) on each E1 link.

Efficient grooming of timeslots onto E1, E3, T3, G.747 or STM-1 lines

The new, high density, 8-port module of the DXC enables grooming timeslots from 116 input E1 lines onto four output E1 links. The 1U high, compact DXC-8R unit can pack 31 signaling timeslots onto a full E1; and the 1U high DXC-10A unit packs 39 signaling timeslots onto one full and one Fractional E1 line. With the new DXC-STM-1 add-drop multiplexer and 1/0 cross connect unit, it is possible to transmit 114 timeslots from 114 input E1 lines directly over an SDH backbone.

Advantages of RAD’s DXC solution for signaling monitoring

Alternative Solutions	Disadvantages
Grooms many timeslots onto one line	Reduces line costs
Provides central SNMP management	Provides an accurate picture of the entire network at all times
Compact unit	Saves space
High density 8-port module	Saves space; very cost-effective
Data is transparent to the DXC	Enables connectivity to any type of network
Grooms any number of signaling timeslots from each input line	Flexible solution
Supports standard E1	Interworks with existing solutions