Archive of Unheard Calls

The Archive of Unheard Calls is a subsidiary holding of the Catalogue of Unheard Melodies, maintained on Floor Ξ-9 and administered operationally by the Department of Acoustic Quarantine. It collects, preserves, and indexes telephone calls — and, by extension, all addressed utterances routed through a connecting exchange — that were placed but never answered, and whose content therefore survives only as an uncompleted signal. The Archive holds no recordings. It holds the interval before the first word.

Accession is by ring-count rather than by speaker. A call enters the Archive at the nineteenth unanswered ring and is withdrawn from the register of live traffic at the fortieth; anything between the two figures is catalogued in draft and may still be reclaimed by the caller. Standing practice on this point derives from Ordinance Gamma-7, Annex 9, which fixed the interval "at twenty-one rings, neither more nor less, that the caller may have ample time to think better of it" — the figure twenty-one having been chosen, the Annex explains without further comment, because the drafting committee sat through a demonstration and that is when they lost patience. A later recension of the Annex gives nineteen. Both are in force, and the discrepancy is handled case by case at the intake desk.

Holdings

The Archive's principal series is arranged by what the Tower calls pitch of address: the point in a call at which the connection was abandoned. The divisions are, in order of accession frequency:

• Series A — dialled, not yet connected (the largest division, comprising roughly sixty per cent of holdings);
• Series B — connected, ringing, abandoned before the nineteenth ring;
• Series C — ringing past the nineteenth ring, held in perpetuity;
• Series D — answered by a wrong party, who then hung up, transferring the call to the Archive of Unheard Melodies under clause 44 of the standing concordat between the two archives;
• Series E — abandoned by the receiver's hand rather than the caller's, which is contested ground and is indexed twice, once in each party's name.

Series E has been a source of friction since the Seventeenth Concordance assigned it to the Department of Acoustic Quarantine and the Eighteenth Concordance, the following season, assigned it to the intended recipients themselves, who were described as "the natural custodians of a call declined." Neither document has been withdrawn. The Department continues to shelve Series E and the public continues not to collect it, and the shelves have accordingly remained full.

Origin and the Vestibule question

The Archive was constituted in the 23rd Recorded Cycle, within two years of the founding of the Vestibule of Unanswered Calls, the public-facing antechamber situated a short descent from Floor 199. Early custodial notes describe the new holding as an "annexe of record" to the Vestibule, receiving copies of copies. This arrangement was repudiated in the 31st Cycle, when a clerk of the second grade, Maren Vallis, submitted a memorandum arguing that the Vestibule's holdings, being calls that were routed to a vestibule, were in fact answered — the vestibule being a place, and a place being a respondent of sorts — and could not properly be classified as unheard. Vallis's memorandum runs to forty pages and is regarded in the Department as substantially correct and procedurally unhelpful.

"The Vestibule does not answer. It receives. A call received is a call met, and a call met is heard, though nothing is said."

— Maren Vallis, Memorandum on Classification, 31st Recorded Cycle, folio 12

The Department never formally replied to Vallis. It did, however, in the following year, begin stamping Vestibule transfers with the words "SEPARATE PREMISES," a designation that appears nowhere in any ordinance and has never been defined. Vallis's memorandum is now kept in the Archive itself, filed under Series A, unidentified caller.

Measurement and the Ud

Because unheard calls produce no audible output, their acoustic properties must be interpolated. The Archive measures its holdings in Unheard Decibels (Ud) against the reference silence maintained at the Archive of Unheard Melodies on Floor Ξ-7, following the method agreed at the Assizes of the Quiet Registry in the 38th Cycle. A typical Series A holding measures between 2.1 and 2.4 Ud; a prolonged Series C holding, retained through a full winter, may measure as high as 6.8 Ud, which the assay office describes as "uncomfortable but within tolerance." Values above 9 Ud require the item to be transferred to the Granite Plaza of Unheard Echoes for dispersal. No item has yet required this, though the figure was nearly reached in the winter of the 47th Cycle, when a single Series C holding, dialled from a public instrument on Floor Ξ-9 and left ringing for eleven days, caused the assay office to file a hazard notice and the Department to send two clerks to sit with it.

The 44th Cycle ledger dispute

Disagreement persists over whether the Archive's registers constitute an independent record or merely a duplicate of the Catalogue of Absences. The question turned, in the 44th Cycle, on a single entry — ledger folio 2,204, an unconnected call of three seconds' duration — which appeared in the Archive's register and not in the Catalogue's. The Catalogue's custodians maintained that the entry had been invented by a junior clerk to make up a weekly quota. The Archive's custodians maintained that the call had been real, brief, and unanswered, and that the Catalogue had simply failed to hear of it. The matter was referred to the Librarians under the Nineteenth Concordance, which directs that such disputes be resolved by examining the physical instrument from which the call was placed. The instrument, a wall-mounted unit on Floor Ξ-9, was found to have been removed in the 41st Cycle for repair and never reinstalled.

The dispute remains open. Both registers are consulted when the matter arises and neither is preferred. The junior clerk was promoted.

Access

Consultation is by appointment and by demonstration of a genuine interest: a reader must state, on the intake form, the name of a person they have themselves failed to reach, and the form is filed whether or not the name is verified. Reading is conducted in silence at the long tables on Floor Ξ-9, each table provided with a disconnected handset. Visitors are reminded that the handsets do not ring, are not connected, and must not be lifted.