The following sections provide a brief summary of the OLT 8820 G:
The OLT 8820 G platform provides low-cost, high-density subscriber access concentration in the Single Line Multi-Service (SLMS) architecture.
The OLT 8820 G is a next generation design that carries data and video services over GPON downlinks and Gigabit Ethernet/Fast Ethernet or, depending on the model, 10 Gigabit Ethernet uplinks. The OLT 8820 G aggregates local loop traffic from a variety of media and sends it to an upstream Fast Ethernet/Gigabit Ethernet device.
The OLT 8820 G can be deployed in Central Office environments, outdoor cabinets, or controlled environmental vaults for remote terminal applications. The OLT 8820 G is intended for restricted access locations only.
As service providers look to boost revenues and offer new multimedia services, bandwidth availability and service quality becomes crucial. The need to deliver high-definition video, faster Internet services, and on-demand content combine to require high-speed fiber-based services. Standards-based GPON technologies have become the solutions choice for delivery of fully featured Triple Play networks.
Historically, the requisite high construction and installation costs required to deploy FTTx have presented a significant barrier to its widespread adoption. Similarly, the time consuming and costly process to re-wire homes with Ethernet for IPTV have slowed deployment as well. Fiber is commonly looked to for new developments and Greenfield applications, where the costs to deploy fiber are no greater than those to deploy new copper. However, increasingly carriers are beginning the migration of FTTx into existing neighborhoods to ensure the necessary bandwidth is available to deliver a competitive suite of services. Iskratel has addressed these challenges from a service provider's perspective and developed solutions to simplify the installation of FTTx, minimize operational costs, and deliver networks fully capable of offering competitive "Triple Play" services - with no new, in-home wiring.
For existing residential communities, laying fiber all the way to the premises involves major construction as well as investment. GPON (Gigabit Passive Optical Network) is currently considered the most economic technology for FTTH (Fiber to the Home), since it supports up to 64 passive splits, optimizing the cost of the optical transceivers at the OLT, coupled with the capability to deliver 2.5 Gbps downstream and 1.25 Gbps upstream bandwidth for new services.
Despite the technical advances, which standards-based GPON offers, the initial investment is seldom justified for the delivery of just the basic POTS ("Plain Old Telephone Service") and Internet data services already provided over copper with DSL. GPON is closely coupled to triple play services, where the inclusion of IPTV or RF video service yields a new revenue stream from which the business case for the FTTH capital expenditure is justified.
Video entertainment services have evolved rapidly over the past few years from analog or digital broadcast services to enhanced high-definition (HDTV) broadcast services with new on-demand and interactive capabilities. Although new compression standards like MPEG-4 AVC lower video bandwidth per stream by one-half that of MPEG-2, increased channel offerings combined with the growing numbers of HD televisions per home are actually pushing overall bandwidth demand up. Several years ago IPTV plus internet access services typically required 15 - 23 Mbps per household, for service to two or three TVs. Today, most service providers expect to deliver HD to three to five TVs with faster Internet speeds for video downloading and gaming. Many service providers now believe the required bandwidth per home is reaching 28 - 35 Mbps, exceeding the capabilities of DSL on most copper lines. These trends in broadband service have many analysts and service providers predicting that as much as 100 Mbps will be required per home within the next 10 years.
The OLT 8820 G includes the following models:
SBB2138GD: Eight subscriber facing GPON ports, eight FE/GE uplinks.
SBB2120GD: Eight subscriber facing GPON ports, two ten Gigabit Ethernet and eight FE/GE uplinks.
This section describes some key features of the OLT 8820 G, including:
Standards supported
Protocol supported
Management
The OLT 8820 G provides the following key data services:
IP forwarding and routing—incoming packets from an interface are forwarded to the appropriate output interface using the routing table rules
IP redundancy
DHCP servers to simplify user IP address configuration and setup DHCP relay
Numbered or unnumbered interfaces.
Transparent bridging, VLAN bridging, intralinks, and transparent LAN service (TLS)
Type of Service (TOS) and Class of Service (COS) processing
IP Service Level Agreement (IPSLA)
Secure bridging
The OLT 8820 G supports the following standards:
IEEE 802.3 Ethernet
IEEE 802.1 p
IEEE.802.1Q
IEEE 802.w
IEEE 802.3ad
ITU-T G.984.1- 984.4 OMCI
The OLT 8820 G supports the following protocols:
IP host and gateway support
RIP v 1 (RFC 1058) RIP v2 (RFC 2453)
DHCP server (RFC 2131, 2132)
DHCP relay with Option 82
Bridging 802.1D support
VLAN 802.1p/q support
RSTP 802.w support
Link aggregation and LACP 802.3ad support
Dense/sparse multicast support, IGMPv2
Integrated access control and content protection
RADIUS Authentication
The OLT 8820 G chassis supports:
Eight FE/GE uplinks
Two 10GE uplinks (optional with both ToP and nonToP models)
One T1/E1 clock port (ToP models only)
One 1 pulse per second (1PPS) port (ToP models only)
One Time of Day (ToD) port (ToP models only)
Dual redundant power inputs
Alarm inputs
Alarm outputs
Port LEDs
Removable fan tray
The OLT 8820 G cables and connectors are accessed from the rear of the chassis. Airflow through the unit is from right to left.
This section describes the OLT 8820 G hardware.
The OLT 8820 G has two primary management interfaces: RS-232 serial craft port for local management and 10/100 BaseT full duplex Ethernet port for local management or local LAN connectivity.
Note:The 10/100 Base-T Ethernet interface is assigned the default IP address 192.168.10.1. This default IP address is reset if a set2default is performed without the restore option.
After establishing a connection to the system, administrators can manage the device using the Command Line Interface (CLI), Web GUI, SNMP, or an EMS.
The OLT 8820 G models provide eight high-speed SFP-based and eight RJ45 Fast Ethernet/Gigabit Ethernet uplink interfaces. 10GE versions also include 2 XFP-based 10Gbps interfaces
The OLT 8820 G provides eight SFP-based GPON ports.
The OLT 8820 G uplink interfaces supports a number of small form factor pluggables (SFPs) or XFPs depending on the protocol, fiber type, and distance requirements.
These SFPs and XFPs (optical transceivers) are high performance integrated duplex or simplex data links for bi-directional communication over multimode or single mode optical fiber. All supported SFPs are hot-swappable, therefore enabling SFPs to be easily changed regardless of whether the power is on. In addition, if an incorrect SFP is plugged in the user will receive a “mismatch” error in their management software.
Furthermore, this opto-electronic transceiver module is a class 1 laser product compliant with FDA Radiation Performance Standards, 21 CFR Subchapter J. This component is also class 1 laser compliant according to International Safety Standard IEC-825-1.
March 27, 2012