Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

2

Ou

LIM

Brevets

S/O

Description générale

Metal and synthetic components.

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

106,0 cm

Largeur

76,0 cm

Hauteur

183,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Communications

Catégorie

Téléphonie

Sous-catégorie

S/O

Fabricant

Ou

Nortel

Pays

Canada

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Canada

État/province

Ontario

Période

Used c. 1990 +

Canada

"Link Interface Module" (LIM; also known as Link Interface Unit or LIU) is one functional module of DMS-100 switch[ing system], designed and made in Canada. When Northern Telecom announced its DMS product line in 1976, it was the first telecommunication equipment manufacturer in the world to offer a complete line of digital telephone switches. As a product it has been extremely successful for Nortel and ongoing sales and service contracts provide a significant, and stable, portion of Nortel's revenue. (ref. 1)

Fonction

To provide signalling services between DMS-100 telephone switch at one central office and the DMS-100 at another.

Technique

The Link Interface Module (LIM, also known as the Link Interface Unit or LIU) uses common channel signalling (CCS, a.k.a. SS7), which uses a narrow band of the voice channel dedicated to signalling. To set up calls between exchanges, only this narrow band has to be used, leaving the remaining channel capacity free for other uses until the call connection is actually established. This makes for economical use of channel capacity and also allows data to be sent during the call without interfering with the conversation. (ref. 1)

Notes sur la région

Inconnu

Détails

Marques

All controls, components, etc. labelled; most also bear bar coded decals. "NT9X95AA/ REL 05/ NT9X9501/ REL 03", "MADE IN CANADA", and "NT9X70BB/ REL 03/ LIM 000" printed inside cabinet, on base.

Manque

Unknown.

Fini

Metal cabinet frame and access doors have grey enamel painted finish. Metal and synthetic modular components inside are predominantly brown, with green trim and labeling. Grey synthetic covering on cables. Numerous bright blue synthetic connectors visible inside cabinet back.

Décoration

S/O