S-Access ETHERLINK IV Technical Description And Operations Manual
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DT Etherlink IV User Manual- 21 -DSL1 DSL2 DSL1 DSL2 DSL3 DSL1 DSL2 DSL3 DSL41 2 1 2 3 1 2 3 41 Down 1 2 Down 1 2 3 DownDown 1 1 Down 2 1 2 Down 31 Down Down Down 2 Down DownDown 2 1 1 Down 3 2Down 1 Down 1 Down 2 DownDown Down 1 1 Down Down 21 Down Down DownDown 2 3 1Down 2 1 DownDown 2 Down 1Down 1 Down DownDown Down 2 1Down Down 1 DownDown Down Down 1Table 3.8 Examples of reservation of systems with two, three and four SHDSL channels3.2.2.1.4 Automatic Configuration of a LinkS-Access Etherlink_IV devices support to configure the complete link in accordance with the Master-Modem configuration. This mode is available for the following links: Point-to-Point single-channel or multipair links Point-to-Point multi-channel links with independent channels Star-topology multichannel links Point-to-Point two-channel two-pair links Star-topology two-pair links Links with regeneratorsNote: Automatic configuration of link reservation is not supported.When the automatic configuration is used, the Slave-Modems and Regenerators receive nearly allconfiguration parameters for DSL and all other interfaces (like E1) through the link from the Master-Modem. In a majority of cases they require just a minimum configuration, what helps not to duplicatemanually the configurations to all other devices in the link. Configurations like the number oftransmitted E1 timeslots over DSL, CRC4 and E1 (G703/4) modes do not have to be configured onall devices because they are received automatically through the link.The system of automatic configuration operates the following way: The CP side (Slave) automatically adjusts configuration according to the stream structurereceived from the CO side (Master), not to cause permanent losses of user data. If the CP side (Slave) cannot adjust correspondingly, it displays a RCONF alarm and sends amessage to the remote terminal device (Master). If configurations of terminal devices (Masterand Slave) do not coincide, the RCONF alarm is displayed. RCONF means a remote urgentalarm.The link is adjusted in the channel structure in the direction from the Master- to the Slave-Modem: The stream structure is configured on the Master-Modem device. If there is any Regenerator in the link, it receives this structure and configures itself accordingto it. Also a next Regenerator receives the structure from the previous Regenerator and performsconfiguration according to it. |
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