GEPON OLT Optical Line Terminal With 16 EPON SFP Module One 10G XFP And One 4 GE
Comparison of EPON and GPON
Fiberall provide both EPON and GPON equipment. Which one is better?
Please check the below comparison for your reference.
Both of them are developed from A/BPON and they have the same
technology source. But they follow different standards. EPON
complies to IEEE standard ( IEEE 802.3ah ) and GPON complies with
ITU standard ( ITU G.984 ).
EPON use the most simple technology for most mainstream business
and provide enough function and performance and GPON provides
perfect function and performance for all business in a complex way
The efficiency of EPON is low due to the use of 8B/10B line coding,
generally around 60%-70% and GPON uses scrambling code NRZ
encoding, so that the efficiency is higher, usually around 90%.
| Item | GPON | EPON |
| Standard | ITU.T G.984.x | IEEE 802.3ah |
| Data Rate | 2.488G/1.244G | 1.25G/1.25G |
| Optical Ratio | 1:64~1:128 | 1:16~1:32 |
| Service Support | ATM, Ethernet, TDM | Ethernet |
| Bandwidth Efficiency | 92% | 72% |
| QOS | Very good,including Ethernet, TDM, ATM | Good, only Ethernet |
| Optical Budget | Class A/B/B+/C | Px10/Px20 |
| DBA | Standard Format | Manufacturer defined |
| ONT Interconnection | OMCI | N/A |
| OAM | ITU-T G.984 ( Strong ) | Ethernet OAM(Weak) |
| Data encapsulation mode | The frame length is fixed to 125us, data encapsulation frame is
defined | Ethernet package, length of data packet and Ethernet packet are the
same |
| Technology maturity | Under development | Matured |
| Cost | Much higher ( Several times of EPON ) | Lower |
Special Features Of FA-EOLT8616
2.5U height, adopt full front-wiring, small size, high capacity,
maximum EPON optical fiber interface search up to 16.
With Twin-star bus 10Gigabitcore switch backplane, support
non-blocking wire-speed switch, support 1.25GEPON optical fiber
access.
Provide single main control module, single uplink module, single
power supply module and 4 service interface modules.
Support AC/DC dual power supply, with backup power charger and
alarm device, support connecting external storage battery directly
to do backup power charging protection.
Support flexible controllable multi-cast, IGMP Proxy/Snooping and
etc.
Support strong VLAN extension functions, including VLAN
Stacking/Trunk/Translation, etc.
Adopt multi LLID and IEEE802.1p technologies, provide multi
protection QoS service
Support flexible DBA, uplink/downlink service rate-limited,
precision up to 0.2% (Standard requirement<5%)
Equipment Configuration Of FA-EOLT8616
| No | Item | Full load Qty | Description |
| 1 | Equipment frame | 1 | OLT equipment frame, including 10Gigabit core switch backplane |
| 2 | Main control module (SWA) | 1 | Hot-swappable module, integrate 1 FE out of band management port, 1
debugging serial port, 10Gigabit class non-blocking switch) |
| 3 | EPON interface module (EP4) | 4 | Hot-swappable 4 EPON interfaces modules, compliant with
IEEE802.3-2005 EPON technical standard, support 20km transmission
distance (Standard configuration without optical module) |
| 4 | Uplink interface module(HUP) | 1 | Hot-swappable 4 GE interfaces module, SFP slot, support 4GE+10GE
XFP(Standard configuration without optical module) |
| 5 | Fans module(FAN16) | 1 | Hot-swappable fans module |
| 6 | Power module(PWR) | 1 | Hot-swappable power supply module supports 220VAC/48VDC (With UPS
charger). Builds dual power redundant hot backup with dual power
supply |
Advanced Features
| Switch function | 10Gigabit switch backplane (Switch capability reach up to 60Gbps),
non-blocking wire-speed switch ability
16K MAC address table, support 2K multicast table, support 4K VLAN
(802.1Q)
Up to 1*10GE, 4* uplink GE aggregation (IEEE 802.ad), support
maximum 5 aggregation groups, support port mirroring based on
output interface |
| VLAN | Support IEEE 802.1Q VLAN, support 4K concurrent VLAN
Strong VLAN extension functions, support VLAN
Stacking/Trunk/Translation and flexible QinQ, etc |
| RSTP | Support STP, RSTP |
| IGMP | Support IGMPv1/v2 protocol, support IGMP Snooping/Proxy, support
controllable multicast |
| QoS and ACL | Support CAR(Committed Access Rate), flow rate limit granularity is
64Kbps,
Support priority level remarking based on port ID, MAC address,
VLAN, 802.1p, DiffServ and/or IP ToS priority
Support flexible queue scheduling algorithm, support port-based and
queue-based configuration simultaneously, support three queue
dispatch strategies, such as SP(Strict Priority),WRR(Weighted Round
Robin) and hybrid mode(SP+WRR)
Provide illegal frame filter and packet filter that based on
sources MAC(Media Access Control)address, sources IP address,
destination IP address, port, etc. Support QoS Profile management,
allow user draw up QoS service plan |
| Broadcast storm suppression | Support broadcast, multicast and DLF broadcast storm suppression,
suppression based on setting PPS |
| Flow control | Support IEEE 802.3x flow control in Full duplex mode, support
backpressure flow control in half duplex mode |
| Encryption and security | Support LLID MAC address bundling, control the registration of ONU.
Prevent illegal ONU deceive
Support ONU inter-separation control within same EPON network
Support encrypted start to control configuration |
| Link test | Support EPON network link diagnosis by Ping and Link test |
| Configuration recovery | Support ONU off line configuration, auto-configuration when
registered |
| Management | FTP, Telnet, Console
Support in/out-of-band management, support SNMPv1/v2, support
IEEE802.3ah OAM |
| Management function | Support equipment configuration management, performance management,
fault management, sources management, safety management and etc.
Support ONU remote management, remote mass configuration download,
software remote auto-update
Support ONU offline configuration, auto-configuration when
registered
Support ONU line diagnosis and distance measuring |
| Redundant backup | Support AC/DC dual power protection |
Hardware Features
| Equipment parameters | Dimension | 486mm(W)*103mm(H)*384mm(D) |
| Net weight | 5Kg |
| Power consumption | ≤40W |
| Operating condition | Temperature:0 ~ +55℃, humidity:10 ~ 90% (non-condensed) |
| Storing condition | Temperature:-25 ~ +70℃, humidity:10 ~ 90% (non-condensed) |
| Power supply | DC | 36 ~ 75 VDC |
| AC | 176 ~ 264 VAC |
| Equipment interface | Uplink Ethernet interface | 1*10GE(XFP connector), 4*GE interfaces (GE or SFP connectors) |
| EPON interface | 16*EPON SFP interfaces |
| Console debugging interface | 1 interface, compliant with RS232 technical standard |
| Out-of-band management interface | 1 interface, compliant with 100Base-TX technical standard |
| Monitor and alarm interface | 1 interface, compliant with RS485 technical standard (Support
sub-node monitor ) |
