Glossary
- ABV: Shareholder Agreement
- ALA-P: FTTH-Cities and -communities, which provides its fibre nets to SFN
- ALA-U: Service Provider or business customer. Customer of SFN
- ALEX: Active Line Exchange. The national order- and provisioning-platform of SFN
- B2B: Business to Business
- Backbone: Designates an interconnected core area of a telecommunications network with very high data transmission rates
- BAKOM: The Federal Office of Communications, issues guidelines and recommendations (technical guidelines for FTTH installations in building, physical media)
- BB: behold Backbone
- BBP: Backbone partner
- BEP/HAK: Building entry point for optical fibre connections. this is the connecton point for the end customer's OTO
- Best effort: Desigates minimalist guarantee of quality of service in telecommunications networks
- Breakout Cable: Multi-channel cable made from complete single cables with the plugs already mounted before installation
- B-SP: Business Service Provider
- BV: Business agreement
- Byte: Unit of measure in digital technology and computing, mostly reresenting an 8 bit sequence
- CO: Central Office
- CoMP: coordinated multi-point transmission (LTE Advanced)
- Cos: Class of Service (Service Klassifizierung)
- CPE: Computer Premises Equipment converts light pulses from the optical fibre network into electrical impulses
- Dark Fibre: Optical fibre cable sold or leased unlit. The optical cable is spliced point to point between two locations
- DP: Distribution Point, the last branch/splicing point before the house connection, often in a socket in a manhole
- Drop Cable: Cable in exchange area
- DWDM: Dense Wavelength Division Multiplex. Multiplex procedures are methods of signal and message transfer which combine multiple signals and send them simultaneously via a medium. Dense Wavelength Division Mulitplex is currently the most powerful variant
- E-LAN: Multipoint-to-multipoint Ethernet connection
- E-SAP: End customer Service Access Points
- EPL: A transparent Ethernet service (EVC) between two dedicated Ethernet interfaces (ports)
- EP-LAN: A transparent Ethernet service (EVC) between three or more Ethernet interfaces (ports)
- Ethernet: Ethernet is a technology used for a data network connected by cable. It enables data to be exchanged in the form of data packets between devices connected to a local network
- EV: Single Agreement / End Customer Agreement
- EVC: Ethernet Virtual Connection
- EVPL: Ethernet Virtual Privat Line is a data service supporting a point-to-point Ethernet connection between a pair of network user interfaces
- EVU: A utility company is a company which supplies ist customers with utilities (electricity, water, gas and telecommunications)
- FCS: Fibre Connectivity Services
- FDA: Telecommunications service provider
- FLL: Fibre Local Loop. Leasing individual optical fibres from the connection hub (CO) to the end customer's optical socket (OTO)
- FTTA: Fibre To The Antenna
- FTTB: Fibre To The Building
- FTTC: Fibre To The Curb
- FTTH: Fibre To The Home designated a telecommunications network operated using optical fibres as far as every business, multi-occupancy or family dwelling
- FTTR: Fibre To The Radio
- Gbps: Information about data transmission rates is measured in an amount of data units per time unit. The smallest data unit is the bit, which is why the bit rate id often given using bits per second (bit/s)
- ICIC: Inter-Cell Interface Coordination (LTE Advanced)
- Incident Management: The purpose of incident management is to troubleshoot a service to meet SLA standards as a minimum
- Interfaces: The interface is the part of a system used for communication
- IP: Internet Protocol - a network protocol used for packet-based connectionless data transmission
- IPV: Individual Partner Agreement
- Jitter: Variation in periodicity in the transmission of data signals, a slight fluctuation in the precision of the transfer pulse
- LAN: Local Area Network Computer network exceeding the scope of a personal area network but smaller in scope than a wide area network. A LAN's scope is therefore limited
- Layer 1: The physical layer is the lowest layer in the OSI model. This layer provides mechanical, electrical and other functional tools to activate and maintain physical connections and transfer bits via them
- Layer 2: Under the OSI model the role of the data link layer is to ensure reliable (i.e. largely faultless) transmission and control access to the transmission medium
- LC/APC: Lucent Connector - Angled Physical Contact. Optical connector version
- Lead Time: Delivery time / Allocation time
- LEX:
- LWL: Optical fibre. Cables made using fibre optics and fitted with pluf connectors, used to transmit light in the visible, ultraviolet and infrared spectrums
- Mbps: Information about data transmission rates is measured in an amount of data units per time unit. The smallest data unit is the bit, which is why the bit rate is often given using bits per second (bit/s)
- MCSPC: Multi City Service Provider Connection
- MTTR: Mean Time To Repair - average (not guaranteed) time to repair a fault. This is the period between a fault being detected and its being repaired
- MEF: Metro Ethernet Forum was founded in 2001 and is an international industrial non-profit consortium devoted to the worldwide adaption of carrier Ethernet networks and services
- MRC: Monthly Recurring Charges
- MTU: Maximum Transmission Unit - defines the maximum data packet size which can be transmitted without fragmentations in layer 2 frames under the OSI model
- Multicast: Designates a message transmission from a single point to a group (also called a multipoint connection)
- Multimodefaser: Several thousand modes can be prpagated using these
- OMDF: Optical Main Distribution Frame
- Off-Net: Locations without an optical fibre connection
- OHDF: Optical Handover Distribution Frame. This distribution frame is the end point for optical connections from Swisscom. The OHDF is in the telecommunications service provider's area and is the interface between Swisscom and the telecommunications service provider
- On-Net: Places which are developed with fiber net
- ONT: Optical Network Termination.
- Open Access: Open access networks are designed to be open to all service providers with no discrimination
- OSS/BSS: Operations Support System. Describes a network management system supporting automated service processes. These are also supplemented by what are called Business Support System (BSS) for order processing, accounting and customer payments
- OTC: One Time Charges
- OTO: Optical Telecommunication Outlet. Is installed in every dwelling or business unit and forms the connection with the optical network
- Packet Loss: Occurs in packed-based data transmission within networks. If the transmission medium does not function as expected, some data packets may not reach the specified target
- Patchen: to patch
- PBV: Partner Agreement
- PoP: Point of Presence. Point at which the telecommunications provider has an entry point to their own network
- Port: Designates an external interface to which further devices can be connected using a cable or into which plug-in cards may be inserted
- Protection: In communications networks, designates the option of automatically switching to redundant resources in the event of a fault
- Qos: Quality of Service. Describes the quality of a communication service from the user's point of view. QoS is technically an amount of quality specifications required of the overall procedure in terms of interplay between multiple objects
- Reaction Time: The period between a fault being reported with a trouble ticket being opened and the beginning of fault analysis
- RFS: Ready For Service.
- RJ45: Register Jack 45. Standardised plug connections for telecommunication cabling, e.g. Ethernet cables
- Router: Network devices able to transmit network packets between mulitple computer networks
- R-SP: Residential Service Provider
- SAN: Storage Area Network
- SAP: Service Access Point
- SDH: Synchronous Digital Hierarchy. Multiplex technology enabling low-rate data streams to be combined into a single high-rate data stream
- SDT: Service Down Time. Designates the duration for which a service is not available in accordance with the contractual agreement
- Service Provider Access Line: Fibre net connection
- Set-Top-Box: Device connected to another device (usually a television) which offers the user additional usage options
- SFN: Swiss Fibre Net
- SFP: Small Form Factor Plugable
- SGF: Strategic Business Area
- Single Mode Faser: Have a very small core diameter through which only the basic mode can be dissemnated
- SLA: Service-Level-Agreement. Designates an agreement between the customer an the service provider for recurring services. Its objective is to make the means of control transparent for the customer by precisely describing guaranteed service characteristics such as scope of service, reaction time and processing speed
- SME: Small and medium enterprises
- Slamming: Designates unauthorised placing of an order without a purchase order from the end customer
- SPF: Service Provider Feed
- SPV: Service Provider Vertrag
- Spleissen: Connection of fibre net with both-way ends
- Suspension time: Periods not take into account in measuring/calculating service down time (SDT)
- Switch: Coupling element used to connect network segments with each other
- Trouble Ticket: Receipt, confirmation and processing of customer incidents, in particular noting faults and their duration
- Trunk (E-NNI): An NNI interconnection designates a connection between two telecommunications networks
- Unicast: Designates the transmission of messages between a sender and a single receiver
- UNI: User Network Interface. Interface where the service is transferred to the customer. The UNI is the border defining the different areas of responsibility for SFN and the customer
- USV: Interrupt-free power supply
- VLAN: Virtual Local Area Network. A logical subnetwork within a switch or an entire physical network
- VPN: Virtual Private Network. A network primarly used for public telecommunications infrastructure to provide a connection to the central network
- WSG: Wholesale Gateway from Swisscom
- WV: Wholesale Agreement
- XMDF: Crossover Distribution Frame