The KEYMILE COZBU 402 052/1 is a plug-in unit identified by the functional designation LECA2, used within the Keymile UMUX 1500/1200 multi-service access and transport platform. LECA2 appears in the official UMUX system block diagrams as a leased-line/carrier access unit positioned in the subscriber and access interface area of the subrack, alongside related units such as LE2Q2, SIFOX, GECOD, MEGIF, UNIDA, and NEMCA. LECA2 also functions as a host system for remote desktop CPE units: Keymile's UCST documentation notes that when a desktop unit is connected to a LECA2 (or TUNOL) host, its management is handled through the LECA2 host system rather than directly, meaning this card also plays a role in managing subordinate remote/desktop equipment within a UMUX or DSL System deployment. UMUX is a carrier-grade multiplexer platform used by dedicated network operators such as railways, utilities, airports, and pipeline operators. Keymile was acquired by ABB in 2017 and the UMUX range was later discontinued; the platform is now supported mainly through refurbished/pulled spare parts.
Key Features:
- One-slot plug-in unit for UMUX 1500 and UMUX 1200 subracks
- Functions as a leased-line/carrier access interface (LECA2)
- Serves as a host/management gateway for connected remote desktop units (e.g., TUNOL-type CPEs)
- Managed via Keymile UCST/UNEM network management tools
Technical Specifications:
- Manufacturer Part Number: COZBU 402 052/1
- Functional Unit Type: LECA2
- Manufacturer: KEYMILE AG, Bern-Liebefeld, Switzerland
- Platform Compatibility: UMUX 1500, UMUX 1200
- Form Factor: Single mechanical slot, standard UMUX 1500/1200 plug-in unit
- Bus Interconnection: UBUS / access interface area (per official UMUX block diagram)
- Weight (per reseller listing): 2.00 LBS
- Note: Exact port count and electrical/line interface specification for LECA2 were not found in a standalone public datasheet — its function and system position are confirmed via Keymile's official UMUX Release Note, but detailed port/signal specs should be verified with Keymile/DZS documentation before publishing precise electrical figures.
