While Layer 2 functionality is adequate for speed-shifting within one technology, interconnecting technologies such as Ethernet and token ring are easier at Layer 3.

The card implements the electronic circuitry required to communicate using a specific physical layer and data link layer standard such as Ethernet or token ring.

The names used - such as ring or star - are only rough descriptions.

Although most antibiotics probably do not affect hormonal birth control such as pills, patch, or ring, some antibiotics may decrease their effectiveness.

The traditional way around this was to charge up an artefact (such as a mirror or ring) with power over a long time, and to simply trigger it when needed.

For this reason, applications which need highly deterministic load behavior often used polling or token-passing schemes (such as token ring) instead of contention systems.

Telephony is integrated in the TV portal to manage voice features such as musical ring back tones or call forwards with a user-friendly interface.

However, new research shows that antibiotics, with the exception of rifampin and rifabutin, do not affect the effectiveness of hormonal contraceptives, such as the pill, patch or vaginal ring.

While layer-2 functionality is adequate for bandwidth-shifting within one technology, interconnecting technologies such as Ethernet and token ring is easier at layer 3.

This medication may decrease the effectiveness of hormonal birth control such as pills, patch, or ring.