Upon detecting an overload condition in a local exchange (LE1), a search for another (LE2) local exchange that is in a normal load condition is conducted.

Moreover, the local exchange (LE) is informed that the subscriber is busy, thus preventing the occurrence of an undefined condition between the local exchange (LE) and the access node (AN).

The SCP (8) directs calls though the network alternately to network connections on one DLE (say 1c) and then to the other DLE (1b).

In the access node (AN), call setdown is effected by means of a disconnect message, which is sent from the local exchange (LE) and on the basis of which the call resources in the local exchange (LE) are released.

A work-at-home telephone station (102), located in a telephone network (100), is connected to local exchange carrier switch (104).

The transit exchange has a signal-controlled oscillator with an output signal which depends on the collectively weighted phase difference between the local exchange clock and the clock of the other exchanges.

A local exchange (10) includes a logic device (28) for producing a specified ring control signal pattern.

Already in 1872 works to convert the area into a central city park had started, but it progressed slowly.

Already in 1872 work to convert the area into a central urban park had started, but it progressed slowly.

Users X1-X6 connected to the access network are mapped in a mapping table TAB in the exchange to at least one preferred link each.

Said local exchanger connects to said edge trunking gateway over a trunking link, and interacts each other by a narrow-band signaling protocol.