V 4 1 BSTU 4 Features and Applications

Target for BSTU 4 features Extend and optimize the features of 4 port layer 2 switch compared with STU 4 according to the demands and needs of ULAF+ customers ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj Enable the flexible application for various Ethernet services without external switch Enable the realization of Ethernet services via TDM and packet data backbone networks with state-of-the-art configuration and maintenance using Qo. S and Co. S according to IEEE standards page 2 Siemens Switzerland Ltd

BSTU 4: New features compared with STU 4 Integrated into ULAF+V 5. 0 Embedded Clock Operation VLAN Termination + Q-in-Q STU 4 4 ports L 2 switch VLAN transparent Support of BSRU Qo. S Link aggregation 4, 8 or 16 wire pairs scalable Port prioritization BSTU 4 page 3 Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj VLAN Support (up to 16 VLANs)

BSTU 4: 4 port L 2 -switch 10/100 Base. TX ports IEEE 802. 3 u (using LCT or Access. Integrator EM ULAF+) • Plug-in: 3 ports at the front and one connected to the backplane of ULAF+ V 5. 0 subrack • Desktop: 4 ports Ports can be individually deactivated to save power in remote powered locations 10 Base. T/100 Base. TX Full- / half duplex operation; Auto negotiating Link Failure Propagation (LFP) page 4 Flow control (pause frames or back pressure) Automatic MDI / MDI-X crossover VLAN and Qo. S supported Handling of oversized frames up to 2000 bytes Link Aggregation (IEEE 802. 3 ad) Self-learning switch (1024 MAC addresses Ingress Rate Limiting Broadcast Storm Protection VLAN IEEE 802. 1 Q support Provider VLAN IEEE 802. 1 ad 16 simultaneous active VLAN Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj Individually configurable

Quality of Service Priority Queues • 4 priority queues • Transmit Queue Algorithms : ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj “Weighted Fairness Queuing” (WFQ) “Strict Priority Queuing” (SP) Prioritization • Based on port • Based on IEEE 802. 1 p • Based on DSCP • Based on VLAN ID page 5 Siemens Switzerland Ltd

Applications (1): STU 4 versus BSTU 4 C-VLAN SHDSL or network connections C-VLAN : External switch page 6 BSTU 4 C-VLAN Qo. S -- Based on port -- Based on IEEE 802. 1 p -- Based on DSCP -- Based on VLAN ID C-VLAN: Customer Virtual LAN Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj C-VLAN

Applications (2): Point-to-point connections 10/100 Base. Tx C-VLAN A BSTU 4 SHDSL via 1… 4 wire pairs C-VLAN B Vo. IP page 7 -Classify ingress frames (Qo. S) based on Port / 802. 1 p / DSCP/VLAN -Limit bandwidth BSTU 4 C-VLAN B Vo. IP Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj C-VLAN A

Applications (3): Connections via TDM based backbone network C-VLAN A BSTU 4 QSTU C-VLAN B Vo. IP page 8 BSTU 4 TDM Network QSTU C-LAN B -Classify ingress frames (Qo. S) based on Port / 802. 1 p / DSCP/VLAN -Limit bandwidth Vo. IP Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj C-VLAN A

Applications (4): Connections via Metro Ethernet Network ULAF+ V 5 subrack C-VLAN A C-LAN B BSTU 4 10/100 Base. Tx C-VLAN A Gb. E BSTU 4 Metro Ethernet Network BSTU 4 C-VLAN A C-VLAN B Vo. IP BSTU 4 P-VLAN (Provider VLAN) P-VLAN Termination Points -Add P-VLAN ID -Classify ingress frames (Qo. S) - Limit bandwidth page 9 BSTU 4 C-LAN B Vo. IP Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj Vo. IP

page 10 BSTU 4 plug-in version with direct access to backplane of ULAF+ V 5. 0 subrack (S 3105 -B 628 -A 210) No Ethernet cabling necessary ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj Integration in ULAF+ V 5 Siemens Switzerland Ltd

Applications in ULAF+ V 5 using BSTU 4 plug-in C-VLAN A Gb. E uplink (optical or copper) ULAF+ V 5 subrack* BSTU 4 WAN BSTU 4 plug-in C-VLAN B *S 3105 -B 628 -A 210 page 11 Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj Packet Network

ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj MCS Comparison with another copper bonding schemes *) Not yet implemented in ULAF+ systems. Can be implemented on customer request. page 12 Siemens Switzerland Ltd

MCS Multi Channel Synchronisation Bundling of 2. . 4 channels over transparent or structured TDM networks ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj Resiliency Independent Rx- and Tx- data streams Network delta delay compensation Minimised additional delay caused by MCS (< 100µs) Autonomous detection and correction of wire pair or channel interchange Proprietary and patented inverse multiplexing algorithm page 13 Siemens Switzerland Ltd

Embedded clock operation 2, 048 MHz clock input e. g. from SDH ULAF+ subrack BSTU 4 (RT) SHDSL via 1… 4 wire pairs Mobile network BTS / Node. B Timing output BSTU 4 COT 2, 048 MHz clock input SHDSL via 1… 4 wire pairs BSTU 4 (RT) Timing output BSTU 4 (COT) page 14 Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj BSTU desktop units are equipped with 2, 048 MHz clock input/output interface (BNC 75 Ohm). High quality clock can be provided to the remote location usnig synchronous SHDSL transmission.

BSTU 4 scalability 2 x 4 wire pairs with Link Aggregation, up to 45, 6 Mbit/s BSRU P 1 1 2 P 2 1 2 1. . . … 4 LT LT P 1 page 15 BSTU 4 NT P 1 P 2 NT P 1 Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj BSTU 4

BSTU 4 DSLAM Backhaul with Link Aggregation Σ=91, 2 Mbit/s BSTU 4 e. g. DSLAM BSTU 4 Metro Ethernet Network BSTU 4 22. 8 MBit/s BSTU 4 Incoming Packets with different MAC addresses BSTU 4 Link Aggregation (IEEE 802. 3 ad) Ethernet Frames are distributed among different links (based on MAC-Addresses) Up to 91, 2 Mbit/s over up to 16 wire pairs can be aggregated Easy to set-up and configure with Ulaf+ LCT or Access. Integrator page 16 Siemens Switzerland Ltd ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj 22. 8 MBit/s

Your contact Sales ULAF+ V 4 -1 Draft. . ppt S-CH EIP A/frj Siemens Switzerland Ltd. International Sales EIP A Albisriederstrasse 245 CH-8047 Zurich Tel. : + 41 -585 586 144 Fax: + 41 -585 414 e-mail: international. sales. ch@siemens. com homepage: http: //www. siemens. ch/ulaf page 17 Siemens Switzerland Ltd