ETHERLINK II - Repeater
Manual
Page 29 of 106
3.6.1.4 Automatic configuration of a link
S-Access ETHERLINK_II devices allow one to configure the link in accordance with the Master-
modem configuration. This mode is available for the following links:
Point-point single-channel links;
Point-point multichannel links with independent channels;
Star-topology multichannel links;
Point-point multipair links;
Point-point two-channel two-pair links;
Star-topology two-pair links;
Links with regenerators.
Note: Automatic configuration of link reservation is not supported.
When the automatic configuration is used, the Slave modems and regenerators receive nearly
all configuration parameters for DSL and E1 from the link. In a majority of cases they require
minimum configurations, which allows one not duplicate manually configurations to all other
devices in the link. Such configurations as the number of E1 time slots transmitted over DSL,
CRC4 and G704 modes should not be configured on all devices because they are received
automatically from the link.
The system of automatic configuration operates as follows:
The CP side (Slave) automatically adjusts so that to correspond to the stream structure
received from the CO side (Master), and not to cause permanent losses of user data;
If the CP side (Slave) cannot adjust correspondingly, it displays a RCONF alarm and sends
a message to the remote terminal device. If configurations of terminal devices (Master and
Slave) do not coincide, the RCONF alarm is displayed. RCONF stands for remote urgent
alarm.
The link is adjusted to the channel structure in the direction from the Master to the Slave:
The stream structure is configured on the Master device;
The regenerator, which the next in the link, receives this structure and configures itself
according to it;
The next regenerator receives the structure from the previous regenerator and performs
configuration according to it;
The Slave device receives the stream structure from the regenerator, which the last one in
the link, and also performs configuration;
When the Slave device receives configuration, it distributes the received E1 streams to its
E1 ports. If the number of ports is not enough, it displays the RCONF alarm and does not
change the configuration of E1 streams. If the E1 streams are not distributed, the Slave
device receives configurations of WAN. Therefore, the integrity of the Ethernet link is
supported.
The RCONF alarm (which is displayed by the <ALARM> command and stands for the remote
urgent alarm) means that the local and remote equipment have incompatible configurations.
