RAD’s DXC Facilitates Cost-Effective, Value-Added Services

Mobile operators reap significant revenues from advanced services such as voice messages, SMS messages and international roaming. In addition, offering a wide range of services attracts customers and generates customer loyalty.

DXC reduces the number of switch ports and leased lines
RAD's DXC multiservice access nodes provide mobile operators with a cost-effective means of providing advanced services. The DXC collects signaling timeslots from many leased lines and grooms them over a full link to the protocol analyzer at a central site. The analyzer reads the signals that identify each user, checks the user profile and activates the appropriate response. (For example, it activates call forwarding if requested by the user, or verifies the password of a cellular user trying to access voice messages.) By extracting only the signaling timeslot from the traffic, the DXC reduces the number of lines required to connect to the protocol analyzer.

In addition, by cost-effectively grooming the signaling of several small sites, the DXC may make it worthwhile for cellular operators to expand their service coverage to remote sites.

TDM Transport
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. Since the traffic is transparent to the DXC, it can support any signaling protocol, provided that the signaling information resides in the same timeslot of each E1 link. The DXC is a complementary solution, enabling expansion of the existing monitoring method. It seamlessly integrates with any other standards-based equipment.

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, cost-effective 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.

Low cost IP transport
To save on line costs, the mobile operator can use RAD's IPmux with TDMoIP technology to send groomed signaling information over IP lines. For more information on TDMoIP, please visit www.pseudowire.com.