Busy signal

A busy signal (or busy tone or engaged tone) in telephony is an audible or visual signal to the calling party that indicates failure to complete the requested connection of that particular telephone call.

The busy signal has become less common in the past decade due to the prevalence of call waiting and voice mail.

Reasons for a busy signal

An otherwise unspecified busy signal indicates that the called number is occupied:

The standard busy signal sometimes occurs (sometimes with an intercept message played over the busy) at the end of a call to indicate the other party has hung up, but mostly the Off-hook tone is used.

Reorder tone

A reorder tone, sometimes called a fast busy signal, indicates that no transmission path to the called number is available. This is usually because the Inter-LATA trunk is busy at the time of the call. Usually, this clears in a few seconds, if one redials.

Contraction (grammar)

A contraction is a shortened version of the written and spoken forms of a word, syllable, or word group, created by omission of internal letters and sounds.

In linguistic analysis, contractions should not be confused with abbreviations nor acronyms (including initialisms), with which they share some semantic and phonetic functions, though all three are connoted by the term "abbreviation" in loose parlance. Contraction is also distinguished from clipping, where beginnings and endings are omitted.

The definition overlaps with the grammatical term portmanteau (a linguistic blend), but a distinction can be made between a portmanteau and a contraction by noting that contractions are formed from words that would otherwise appear together in sequence, such as do and not, whereas a portmanteau word is formed by combining two or more existing words that all relate to a singular concept which the portmanteau describes.

English

English has a number of contractions, mostly involving the elision of a vowel (which is replaced by an apostrophe in writing), as in I'm for "I am", and sometimes other changes as well, as in won't for "will not". These contractions are commonly used in speech and in informal writing, though tend to be avoided in more formal writing.

ID

ID, Id, id or I.D. may refer to:

Identity

Fields of study

Computer science

Medicine and psychology

Incision and drainage

Incision and drainage and clinical lancing are minor surgical procedures to release pus or pressure built up under the skin, such as from an abscess, boil, or infected paranasal sinus. It is performed by treating the area with an antiseptic, such as iodine-based solution, and then making a small incision to puncture the skin using a sterile instrument such as a sharp needle, a pointed scalpel or a lancet. This allows the pus fluid to escape by draining out through the incision.

Good medical practice for large abdominal abscesses requires insertion of a drainage tube, preceded by insertion of a PICC line to enable readiness of treatment for possible septic shock.

Incision and drainage is often abbreviated as "I&D" or "IND" by medical professionals.

Adjunct antibiotics

Uncomplicated cutaneous abscesses do not need antibiotics after successful drainage.

In incisional abscesses

For incisional abscesses, it is recommended that incision and drainage is followed by covering the area with a thin layer of gauze followed by sterile dressing. The dressing should be changed and the wound irrigated with normal saline at least twice each day. In addition, it is recommended to administer an antibiotic active against staphylococci and streptococci, preferably vancomycin when there is a risk of MRSA. The wound can be allowed to close by secondary intention. Alternatively, if the infection is cleared and healthy granulation tissue is evident at the base of the wound, the edges of the incision may be reapproximated, such as by using butterfly stitches, staples or sutures.