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SingTel ConnectPlus Asynchronous Transfer Mode
ConnectPlus ATM is designed from the ground up to support multimedia applications. In general, it is the service of choice if a customer demands multimedia support, high speed transport capability, network manageability and network accountability functions. It is able to meet point-to-point, point-to-multipoint as well as multipoint-to-multipoint connectivity needs.
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Service Offerings
The components offered are port and PVC.
Port Speed (Mbps), coinciding with the local standards.
PVC Speeds (Mbps)
CBR
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 34, 40 and 45.
VBRnrt
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20 Other speeds below 45 Mbps and not listed above available on a case-by-case basis. For PVC, there are 2 classes offered. CBR and VBR-nrt. CBR is for constant delay applications e.g. voice and video while VBR-nrt is for bursty applications e.g. LAN data traffic.
Comparison of Frame Relay to ATM Technology | Frame Relay | ATM |
The frame packet size ranges from 0 to 4096 octets. Hence, FR has an advantage over ATM in its variable packet sizes. It can handle any packet size from X.25 from 128 or 256 bytes to Ethernet packets that are 1500 bytes. This makes them compatible with any data transmission.
| ConnectPlus ATM enables different types of Quality of Service. It allows voice, video, data traffic to travel over the same medium. Its small cell (53 octet cell) makes it very well suited for real time traffic and adequate for fast data transfer.
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It is more efficient than ATM due to overhead (especially at lower data rates).
| Suitable for broadband applications.
| | PVC speeds from 16kbps to 1 Mbps |
PVC speeds from 1 Mbps to 45 Mbps (CBR) and 20Mbps (VBRnrt), and even higher in future. ATM has been the proven technology for FR customers with bandwidth upgrade requirement; FR & ATM internetworking is seamless.
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Port speeds from 64kbps to 2 Mbps
| Port speeds are available in 1.5, 2 and 45M.
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ATM promotes creativity in the user, with its many different options and capabilities. The keys to these options lie in the AAL layer with 5 different types to suit different application needs. With these keys, the network designer has the freedom to tailor the network to suit the organization's QoS needs.
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Real Time Traffic over ATM
ATM is designed to handle voice / video traffic from within its network, without the need for vendor modifications to network equipment to accommodate these traffic types.
Quality of Service (QoS)
ATM technology is able to deliver QoS, the ability of a service to define jitter, delay, cell / packet loss ceilings, security and bandwidth on an application by application basis. We are able to strictly define how to route and treat the data being transmitted. The main goal of QoS is to allocate resources to users who have the highest priority.
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