GPON-EPON OLT and ONU’s Abbreviation Descriptions

GPON-EPON OLT and ONU’s Abbreviation Descriptions

GPON-EPON Application Abbreviation

  There are lots abbreviation words in the daily GPONEPON OLT and ONT/ONU‘s solution, application and configuration. It would be a very good idea to collect all those common used professional descriptions,such as abbreviated form of a name in fiber optic or telecom, especially in GPON-EPON product area.

GPON FTTx functional entities

GPON FTTx functional entities

AB:Assured Bandwidth
AES: Advanced Encrypt System
AGC:Automatic Gain Control
AN:Access Network

BE:Best-offer Bandwidth

CBU: Cell Base Unit
CID: Consecutive Identical Digit

DBA: Dynamically Bandwidth Assignment/Allocation
DSLAM:Digital Subscribe Line Access Multiplexer

EFMA:Ethernet in the First Mile Alliance
EPON:Ethernet Passive Optical Network
EqD: Equalization Delay

FB:Fixed Bandwidth
FSAN:Full Service Access Networks
FTTB:Fiber to the Building
FTTC:Fiber to the Curb
FTTH:Fiber to the Home
FTTN:Fiber to the Network

GEM: G-PON Encapsulation Method
GPON: Gigabit-Capable Passive Optical Network


JF:Jumbo Frames

MSAN: Multi-service Access Network
MDU(Multi Dwelling Unit)
MTU(Multi Tenant Unit)

NAB:Not-assured Bandwidth


OAM: Operation, Administration and Maintenance
OCMI:ONU Management and Control Interface.
OLT ( Optical Line Terminal)
ODN ( Optical Distribution Network)
ONU/ONT( Optical Network Unit/ Optical Network Terminal)

P2P:Point to Point
P2MP: Point to Multi-Point
PCBD: Physical Control Block Downstream
PON: Passive Optical Network
POS: Passive OpticalSplitter

RTD: Round Trip Delay

RTT:Round Trip Time

SFU: Single Family Unit
SBU: Single Business Unit
SNI:Service Node Interface

TDM:Time Division Multiplexing
TDMA:Time Division Multiple Access
T-CONT: Transmission Containers

UNI:User Network Interface

VoD: Video On Demand


WDM: wavelength division multiplexing


XDSL: the family of digital subscriber line technologies, such as ADSL,HDSL,SDSL,VDSL and RADSL etc. 


PON OLT and ONU’s Abbreviation Descriptions

PON OLT and ONU’s Abbreviation Descriptions

GPON-EPON Configruation Abbreviation:

oltid: OLT ID number
ontid: ONT ID number
svcid: Service ID number
is/IS; In Service
oos/OOS: Out Of Service
OOS-MA: Out-of-Service and Management
sn-scan: Serial Number Scan
sn-period: Serial Number Scan Period
ds-fec: Downstream Forward Error Correction
xcvr: Transceiver
descr: Descriptions
us-fec: Upstream Forward Error Correction
s-vid: Service VLAN ID
c-vid: Customer VLAN ID
r-vid: Translation VLAN ID
ubw: Upstream Bandwidth
dbw: Downstream Bandwidth
res: N:1 Residential
xcon: N:1 – Cross-Connect 

  1. Your information is useful for me and I’m looking for Gpon supplier.

    • Thanks Masoud,
      Good day, our team is following your case and will contact you soon.
      Best Regards.

Leave a Reply

Latest Blog

  • Broadcom Introduces First NGPON OLT Chip
    Broadcom Introduces First NGPON OLT Chip
      Broadcom(AVGO), a global innovation leader in wireline and wireless communication semiconductor solutions, Launched the industry’s first commercial PON OLT equipment to...
  • Television, not just a (Smart) TV
    IPTV Benefits vs. Cable/Satellite
    Difference Between Cable, Satellite and IPTV   Internet Protocol Television, or IPTV, is the wave of the future for online business. It’s...

About Us

Why FTTH can save telecom cost

FTTH: saving money

【Our Goal】

Benefits our customers via Fiber Network (FTTH).

【FOT Telecom】

Your reliable fiber network equipment and service provider: Read More

Contact us

Email: SKYPE: fanny-lee2007 SKYPE: fiberoptictelecom Tel: +86-20-6622 6784
Add.: Jitang Industrial Zone, No.8 Nanyun Five road, Huangpu, Guangzhou. 510663