Description

The Tellabs FlexSym OLT-mini Plus supports both ITU-T 984 G-PON and ITU-T G.9807/G.987 XGS-PON 10G connectivity to Optical Network Terminals (ONT). It provides flexible choices for designing a modern enterprise network to exactly align with contemporary connectivity such as IoT, wireless, open/shared office and smart buildings demands. Efficiently converge all enterprise connectivity by leveraging fiber cabling's limitless capacity deep into buildings and campus by exactly equipping the OLT-mini Plus with precise 2.5G and 10G speeds.

General Features

The OLT-mini Plus is supplied with the following features:

• 2x PON Ports: The OLT-mini Plus supports 2x PON ports. The ports can be either GPON or XGS-PON. The PON modes cannot be mixed.
• 4x 10/1 SFP+ Ports: The OLT-mini Plus supports 4x OLT PON ports, typically intended to be daisy chained to support the full bandwidth either East or West in an RSTP Switched ring. The OLT-mini Plus uplinks are totally non-blocking and can deliver the full bandwidth of the 10G PONs upstream or downstream.
• μUSB Interface: The OLT-mini Plus provides a μUSB Craft interface for turnup and debugging. The OLT-mini Plus supports turnup via a copper Ethernet interface as well.
• Industrial Temp Rating: The OLT-mini Plus comes with a weathertight enclosure which supports an operating range of 14°F to 104°F (-10°C to 40°C).
• SSHv2 CLI Interface: The standard Tellabs CLI craft interface is supported for turn up and debugging of the unit.
• Standard Panorama PON Interface: The Tellabs Panorama PON software will manage the OLT-mini Plus using the standard GUI and web interfaces.

PON Features 

• Compliant with ITU-T G.9807.1 (physical layer), G.987 (.2/.3/.4) and G.988.1 standards
• Two (2) PON ports
• The OLT-mini Plus is ALWAYs deployed with a splitter.
  • The OLT-mini Plus is deployed with the various splitter sizes (1:4, 2:4, 1:8, 2:8, 1:16, 2:16, 1:32, 2:32, 1:64: 2:64) as long as the maximum split ratio is 64 or less. The OLT-mini Plus can be stacked (1:4, followed by 1:16 = 64-way split).
• Up to 64-way optical split
• 512 UNIs per PON port
• Flexible mapping of GEM ports and TCONT with priority queue-based scheduling
• Activation with automatically discovered Serial Number (SN) and password
• AES-128 bi-directional encryption with 60 second churning of keys
• Forward Error Correction (FEC)
• IP DSCP to 802.1p mapping
• Support for multicast GEM port

ITU-T G.9807/G.987 10G PON

• Compliant with ITU-T G.9807.1 (physical layer), G.987 (.2/.3/.4) and G.988.1 standards
• Connectors: SC UPC XFP module
• Wavelength downstream: 1580 nm
• Wavelength upstream: 1280 nm
• 9.95328 Gbps burst mode upstream
• 9.95328 Gbps downstream receive
• Maximum split ratio 1:64 (reach 6.2 miles/10 km)
• Maximum reach: 18.5 miles/30 km (split ratio 1:16)
• Optical budget: 28 dB (Class B+)

ITU-T G.984 2.5G PON

• ITU-T G.984 compliant
• Connectors: SC UPC XFP module
• Wavelength upstream: 1310 nm ± 50 nm
• Wavelength downstream: 1490 nm ± 10 nm
• Maximum split ratio 1:64 (reach 6.2 miles/10 km)
• Maximum reach: 18.5 miles/30 km (split ratio 1:16)
• Optical budget: 28 dB (Class B+)

IP/Ethernet Network

• 262,144 MACs
• 64,536 Routes / 262,144 Hosts
• 24,576 ACLs
• 32,768 Queues
• 64,536 Counters
• 64,536 Meters
• 40Gbps through-put
• GPON - Maximum Transmission Unit (MTU) 1546 bytes 
• XGS-PON - Maximum Transmission Unit (MTU) 9216 bytes

Security 

Tellabs has implemented unique advanced security features to protect enterprise networks. The OLT-mini Plus supports security across the optical distribution network and end-to-end over the OLAN system; such as encryption of traffic on the PON using the Advanced Encryption Standard AES-128 and Access Control Lists (ACL) at Layer 2 through 4 levels.

The OLT provides for advanced dynamic assignment of services to a port via the use of Network Access Control (NAC) with fall back to a Guest VLAN. The OLT supports IEEE 802.1x port-based authentication and MAB. This prevents unauthorized access to ports and offers RADIUS authentication for users and distribution of policy to end users based on their login.

Software Support

• Minimum base software SR32.0 and higher
• Holds two versions of software with image integrity checking and automatic rollback.

Communications Ports

• 2x PON Ports: The OLT-mini Plus supports 2x PON ports. The ports can be either GPON or XGS-PON. The PON modes cannot be mixed.
• 4x 10/1 SFP+ Ports: The OLT-mini Plus supports 4x OLT PON ports, typically intended to be daisy chained to support the full bandwidth either East or West in an RSTP Switched ring. The OLT-mini Plus uplinks are totally non blocking and can deliver the full bandwidth of the 10G PONs upstream or downstream.
• μUSB Interface: The OLT-mini Plus provides a μUSB Craft interface for turnup and debugging. The OLT2 supports turnup via a copper Ethernet interface as well.

OLT-mini Plus LED Behavior 

LED	Indications		Comments
FAIL		Red Solid	When the FAIL LED indication is Red Solid when powered on, the LED will remain illuminated during initializing and downloading.  The LED will go dark when the unit is in the operational state. Should LED remain illuminated, the unit has failed the power-up self-test or has detected a hardware fault and must be replaced.
		Dark	When the FAIL LED indication is dark, Power is off or unit is in an Operational state.
ACTV - Board Status LED		Green Solid	When the ACTV LED indication is green solid (Operational), the Unit is up, initialized and in service. This LED is not affected by facility failures, only card level hardware failures.
		Green Blink Fast	When the ACTV indication is green blinking fast  (Initializing), the LED blinks at a ½ second (½ second on, ½ second off) duty cycle to indicate the unit is currently in the process of initializing.
		Green Blink Slow	When the ACTV LED indication is green blinking slow (Downloading), the LED blinks at a 1 second duty cycle (1 second on, 1 second off).
		Dark	When the ACTV LED indication is dark, If both ACTV and FAIL are dark the power is off.
PON Low Signal - Indicates the power status of the PON		Green Solid	When the PON Low Signal indication is green sold, it indicates that all ranged ONT serial numbers are above the SD threshold. This LED shall not indicate the state of any missing or unexpected ONTs. The intent of this state is to indicate that the optical quality is good for all ranged ONTs.
		Amber Solid	When the OLT-mini Plus Low Signal LED indication is amber solid, it indicates that one or more Ranged ONT serial numbers have crossed the SD BER threshold. This state indicates that for the ranged ONTs, maintenance is required on the PON.
		Red Solid	When the PON Low Signal LED indication is red solid, it indicates that all provisioned ONTs are below SF. This can be measured by all being in a failed/LOPL-LOS state. The intent is that this LED goes red when there is no received signal on the PON or all received signals are below SF.
		Dark	When the PON Low Signal LED indication is dark, it indicates that no ONTs have been provisioned on the PON. Unexpected ONTs are ignored.
PON Link - Indicates the optical status of the PON		Green Solid	When the PON Link LED indication is green solid, it indicates that all Provisioned ONT serial numbers are ranged on the PON and there are no unexpected ONTs. The state of the PON is good.
		Yellow Solid	When the PON Link LED indication is yellow solid, it indicates that at least one provisioned serial number exists and is failed (LOPL-LOS) or one or more unexpected ONTs have been detected on the PON.
		Red Solid	When the PON Link indication is red solid, it indicates that all provisioned ONT serial numbers have failed.
		Dark	When the PON Link LED indication is dark, it indicates that no ONT serial numbers are provisioned on the PON and no unexpected ONTs are detected on the PON.
SFP+ Link - Indicates the optical status of attached ONTs		Green Solid	When the OLT-mini Plus SFP+ Link LED indication is green solid, all configured ONTs are ranged on the PON and there are no unexpected ONTs.
		Amber Solid	When the OLT-mini Plus SFP+ Link LED indication is amber solid, at least one configured ONT is failed with LOP-LOS or one or more unexpected ONTs are present on the PON.
		Red Solid	When the OLT-mini Plus Link LED indication is red solid, all configured ONTs are failed on the PON.
		Dark	When the OLT-mini Plus SFP+ Link LED indication is dark, there are no configured ONTs on the PON or the PON is disabled.
SFP+ Low Signal - Indicates the power status of attached ONTs		Green Solid	When the OLT-mini Plus SFP+ Low Signal LED indication is green solid, all ONTs upstream are above the SD threshold and no ONTs are LOS. Missing or Unexpected ONTs are not reflected in this LED.
		Amber Solid	When the OLT-mini Plus SFP+ Low Signal LED indication is amber solid, one or more Ranged ONTs are above the SD BER threshold or one or more are failed.
		Red Solid	When the OLT-mini Plus SFP+ Low Signal LED indication is red solid, all configured ONTs are above the SD BER threshold or failed.
Fan Stat - Indicates the status of the fans		Green Solid	When the OLT-mini Plus Fan Stat LED indication is green solid, all fans are spinning within their expected TACH threshold range.
		Red Solid	When the OLT-mini Plus Fan Stat LED indication is red solid, fan(s) are spinning outside the expected TACH range (low or high). The fans are not adequately cooling the unit and the unit must be replaced.

Operations, Administration and Maintenance (OAM)

• ITU-T G.984, G.989 and G.988
• Complete service provisioning, such as Ethernet and VoIP
• Alarming, events and performance monitoring
• Remote image download over OMCI as well as activation and rebooting

OLT-mini Plus Card Cage

The Tellabs 1048 CBA is a compact card cage with a PCB backplane designed for Tellabs 1000 Series plug-in cards. It has four common control slots for processing and power cards, and 10 multipurpose slots for narrowband and broadband cards.

The CBA1048 is designed to be installed in either an optional 12-inch Wall-Mount Swing Rack, or in a 19-inch standard equipment rack using an optional Equipment Rack Mounting Bracket.

AC power for the CBA1048 can be from a Rectifier Shelf containing one Rectifier Module, or two Rectifier Modules for redundant DC power.

Cooling for cards installed in the CBA1048 card cage is provided by an optional Fan Tray that mounts below the card cage. The fans in the Fan Tray are temperature-controlled variable-speed units for quiet, efficient operation and are alarmed.

Note: Tellabs recommends that a Fan Tray always be used to ensure adequate cooling of cards installed in a shelf card cage. Overheated cards may exhibit reduced reliability and shorter service life.

The Tellabs 1048 CBA is designed for use as a single-shelf RST and is not intended to be expanded. If there is the possibility that more than 8 service slots will eventually be needed, then the standard Tellabs 1000 MSAP CBA should be considered, instead.

CBA1048 Features

The Tellabs 1048 CBA has the following features:

• 5 Slots for Tellabs OIU2 cards (each card is double wide)
• Tri-bus backplane 6.2 Gbps (TDM, ATM, and High-Speed)
• Front panel craft port (RS-232)
• Alarm contact closures (wire-wrap posts)
• Wire-wrap backplane (for complete flexibility on a per-slot basis)
• -48v power rail to all slots

Tellabs 1048 CBA Specifications

Inside the CBA1048 Box

Because there are various Tellabs 1048 CBA card cage mounting and optional accessory configurations, the CBA1048 and all accessories are sold separately.

The Tellabs 1048 CBA box contains:

• Tellabs 1048 MSAP Channel Bank Assembly (CBA) card cage
• Four screws (12-24, #3 Phillips) to secure the CBA1048 card cage to rack rails
• Three snap-on ferrite beads for EMI suppression in cables

If multiple CBA1048s are ordered, or optional accessories are ordered along with the CBA1048, they may be packed in the same shipping container, or be shipped separately.

CBA1048 Accessories

The Tellabs 1048 CBA card cage works with the following optional accessories:

• Wall-Mount Swing Rack, with room for the CBA1048 card cage, and a Rectifier Shelf above and a Fan Tray below the CBA1048 (not included)
• 19-inch Equipment Rack Mounting Bracket, with room and holes to mount a Rectifier Shelf and Fan Tray (not included)
• Fan Tray containing four temperature-controlled variable-speed fans
• Rectifier Shelf with space for one Rectifier Module, or two Rectifier Modules for redundant DC power (not included)
• Rectifier Modules: AC to 53.5 VDC (± 5%) at up to 600 Watts, maximum at 120-VAC input (each with AC cord)
• EMI Front Cover for the front of the CBA1048 card cage
• DC/Alarm Cable Assembly with fuse block for Wall-Mount Swing Rack and equipment rack installations, using one or two Rectifier Modules in a Rectifier Shelf

If multiple CBA1048s are ordered, or optional accessories are ordered along with the CBA1048, they may be packed in the same shipping container, or be shipped separately.

Note: The CBA1048 is also sold as part of a kit containing the CBA1048 card cage, a Rectifier Shelf with one Rectifier Module and AC cord, a Fan Tray, and a DC Cable Assembly with fuse block. This kit is shipped in separate boxes and must be assembled before use.

Wall-Mount Swing Rack

The Wall-Mount Swing Rack is a compact 12-inch wide equipment rack that attaches to a wall or other suitable surface that can support its weight with the CBA1048 card cage, plug-in cards, Rectifier Shelf and Rectifier Modules, and Fan Tray installed (about 40 lbs, 18.1 kg). The swing rack, when fully loaded with accessories and plug-in cards, passed the NEBS earthquake tests.

The Wall-Mount Swing Rack is made of heavy-gauge zinc-plated steel, with solid sides and open top and bottom. It attaches to the wall using a heavy-duty continuous (piano) hinge on the left side and three mounting brackets on the right side. Three captive thumb screws on the right side secure the rack to the mounting brackets in the normal operating position.

When the three thumbscrews are loosened and disengaged from the wall mounting brackets, the continuous hinge allows the rack to swing out 90 degrees for easy access to the back of the equipment installed in the swing rack.

A grounding bar is preinstalled on the inside of the left side panel, near the rear. Mounting holes, PEM nuts, and screws are provided near the grounding bar to attach a fuse block (part of an optional cable assembly) for AC-powered installations.

The swing rack has room for the Tellabs 1048 CBA card cage in the middle, and a Rectifier Shelf above and a Fan Tray below the CBA1048 card cage (both optional). Standard 12-24 Telco rack screws secure the equipment to the rack.

Inside the Wall Mount Swing Rack Box

The Wall-Mount Swing Rack, when ordered as a separate accessory, is shipped flat and must be assembled before installation.

Note: When the CBA1048 is ordered as a complete, pre-assembled unit, assembly of the swing rack is not required.

All parts and fasteners needed for assembly are included in the box:

• Wall-Mount Swing Rack left side panel and right side panel, with a grounding block pre-installed on the inside of the left side panel
• Four channel-stock crossmembers with a PEM nut at each end
• Eight screws (12-24, 5/16 Hex/Slot head) with captive star washers to secure the cross members to the left and right side panels
• Three wall mounting brackets (pre-attached to the right side panel)
• Three thumb screws (holding the mounting brackets to the side panel)
• Paper template showing the clear area on the wall required and the mounting hole locations

Note: Fasteners for attaching the rack to a wall or other surface are not included and must be selected for the wall material at the installation location and sourced locally.

If multiple Wall-Mount Swing Racks are ordered, they may be packed in the same shipping container, or be shipped separately.

Equipment Rack Mounting Bracket for 19-inch Racks

The Equipment Rack Mounting Bracket allows the Tellabs 1048 CBA card cage, Rectifier Shelf, and a Fan Tray to be installed in a standard 19-inch equipment rack. It is made from heavy-gauge zinc-plated steel and has mounting holes in the appropriate locations.

The CBA1048 card cage, Rectifier Shelf, and Fan Tray attach to the left-side equipment rack rail in the typical fashion. The right side of the CBA1048 card cage, Rectifier Shelf, and Fan Tray (if used) attach to the left side of the Equipment Rack Mounting Bracket. And the right side of the Equipment Rack Mounting Bracket attaches to the right-side equipment rack rail in the typical fashion.

Slots punched near the bottom of the mounting bracket allow cables from the front of the CBA1048 card cage, Rectifier Shelf, and Fan Tray to be routed to the rear without taking up additional vertical rack space. The rear surface of the mounting bracket provides an area to manage excess cable lengths using magnetic cable anchors.

Fan Tray

The Fan Tray is 1 RU tall and 10 inches wide and contains four 4 5/8-inch variable-speed fans and a controller board. Its purpose is to blow air upward through the CBA1048 card cage to cool the installed cards. Accordingly, it goes in the lowest position of the Wall-Mount Swing Rack or below the CBA1048 card cage when installed in a standard equipment rack using an optional Equipment Rack Mounting Bracket.

Power for the Fan Tray comes from either one or two Rectifier Modules in a Rectifier Shelf installed at the top of the Wall-Mount Swing Rack (all optional), or from existing -48-VDC power in the room. When using dual DC power sources, if one source should fail, the Fan Tray switches over to the alternate source.

The internal controller board adjusts the speed of the fans based on the ambient air temperature flowing into the fan intakes, and sends an alarm signal to the CBA1048 card cage backplane PCB if a fan should fail.

There is a 14-pin Molex connector socket, two LED indicators, and a membrane push-button switch on the front panel.

The connector on the Fan Tray front panel is the input for -48-VDC power and the  alarm output to the CBA1048 when a fan fails.

A cable assembly (optional) connects -48-VDC power from one or two DC sources to the CBA1048 card cage and the Fan Tray. It also connects the Fan Tray alarm output to the CBA1048 backplane fan alarm input.

The Status LED indicator on the front panel lights solid green when the Fan Tray is operating normally.

The Alarm LED indicator on the front panel lights solid red when the Fan Tray is in an alarm condition.

The Test pushbutton on the front panel runs a self-test on the Fan Tray when pressed and released.

The Fan Tray box contains:

• Fan Tray, fully assembled

If multiple Fan Trays are ordered, they may be packed in the same shipping container, or be shipped separately.

Rectifier Shelf

The Rectifier Shelf is 1 RU tall and 10 inches wide, and has space for two 600-Watt, hot-swappable, Rectifier Modules (sold separately). It mounts in the top location of the Wall-Mount Swing Rack, above the Tellabs 1048 CBA card cage.

The Rectifier Shelf has two slots for slide-in Rectifier Modules and a standard IEC AC input power connector for each slot on the rear panel. AC input power for each slot passes through a line filter inside the shelf. DC output power from each Rectifier Module passes through a ferrite bead on the way to separate DC output connectors on the rear panel of the Rectifier Shelf.

A perforated front panel in front of each Rectifier Module slot allows cooling air for the Rectifier Module to be drawn in. Perforations in the Rectifier Shelf rear panel allow the Rectifier Module cooling air to escape into the room.

Rectifier Modules are installed onto the Rectifier Shelf from the front, after removing the front panels. The Rectifier Modules have a PCB edge extending about a half inch from the Rectifier Module rear panel that engages edge connectors at the back of the slot when the Rectifier Module is fully inserted.

If two Rectifier Modules are installed in the shelf and one fails, the CBA1048 and Fan Tray (if installed) continue to operate normally. The failed Rectifier Module can be removed from the Rectifier Shelf and replaced while the power is on. Once the failed Rectifier Module is replaced, DC power redundancy is restored to the system.

Note: A single Rectifier Module installed in the Rectifier Shelf has sufficient capacity to power the Fan Tray and the CBA1048 with any combination of plug-in cards installed. A second Rectifier Module installed in the shelf simply provides a redundant DC power source for the system.

The Rectifier Shelf box contains:

• Rectifier Shelf, fully assembled (no Rectifier Modules installed)

Rectifier Modules

Rectifier Modules for the Rectifier Shelf are hot-swappable and convert AC line power to 53.5 VDC at up to about 16 Amps, maximum. With a 120 VAC input, the Rectifier Module is limited to 600 Watts output.

One is sufficient to run the Fan Tray and CBA1048 with any combination of plug-in cards installed. A second Rectifier Module can be installed in the Rectifier Shelf to provide a redundant DC power source for the system.

Rectifier Modules are installed onto the Rectifier Shelf from the front. They have a PCB edge extending about a half inch from the Rectifier Module rear panel that engages edge connectors in the back of the slot when the Rectifier is fully inserted.

A small fan just inside the Rectifier Module front cover draws cooling air in through the front panel and blows it through the Rectifier Module and out of the module rear panel. Perforations in the Rectifier Shelf rear panel allow the Rectifier Module cooling air to escape into the room.

If two Rectifier Modules are installed in the Rectifier Shelf and one fails, the CBA1048 and Fan Tray (if installed) continue to operate normally. The failed Rectifier Module can be removed from the Rectifier Shelf and replaced while the power is on. Once the failed Rectifier Module is replaced, DC power redundancy is restored to the system.

The Rectifier Module monitors itself for under- and over-voltage output, output overload, and over-temperature conditions. If any parameter is found to be out of range, the Rectifier Module shuts off.

The Rectifier Module box contains:

• One Rectifier Module
• One AC cord with standard IEC connector (to connect to the socket on the Rectifier Shelf rear panel)

If multiple Rectifier Modules are ordered, they may be packed in the same shipping container, or be shipped separately.

EMI Front Cover

The EMI Front Cover reduces electromagnetic emissions emanating from the front of the Tellabs 1048 CBA and helps direct airflow from the Fan Tray (optional) upward through the plug-in cards installed in the CBA1048.

The cover is a heavy-gauge sheet of zinc-plated steel with a hinge on the left side and two latches on the right side. Holes in the hinge leaf line up with equipment rack rail mounting holes in the CBA1048 card cage. Latches on the right side engage studs pressed into the CBA1048 card cage frame.

When unlatched, the EMI Front Cover can be swung in about a 200-degree arc, giving full access to the card slots in the CBA1048. Holes punched into the cover directly over the CBA1048 card slots allow the cards and LED indicators to be visible when the cover is closed.

The EMI Front Cover box contains:

• One EMI Front Cover assembly

If multiple EMI Front Covers are ordered, they may be packed in the same shipping container, or be shipped separately.

DC Alarm Fuse Block Cable Assembly

The DC/Alarm/Fuse Block Cable Assembly connects the DC output(s) of the Rectifier Shelf to the CBA1048 and Fan Tray (optional), and the Fan Tray alarm output to the CBA1048 fan alarm input. It is intended for use with the CBA1048 and Rectifier Shelf (optional) installed in the Wall-Mount Swing Rack.

An in-line fuse block assembly is part of the cable and attaches to the inside of the left panel of the Wall-Mount Swing Rack with two screws. The cable ships with fuses pre-installed.

The DC/Alarm/Fuse Block Cable Assembly has the following connectors/terminations:

• Two four-pin Molex connectors to mate with the DC power A and DC power B connectors on the Rectifier Shelf rear panel
• One fourteen-pin Molex connector to mate with the Fan Tray front panel connector
• One four-pin connector to plug into the fan alarm input on the CBA1048 backplane PCB
• Six wires ending ring lugs to attach DC power A and DC power B wires to the CBA1048 backplane power input screw-terminal barrier strip.

Fuse Locations and Ratings

A fuse block is part of the cable assembly. It contains a separate GMT-style fuse for the CBA1048 card cage (12 A) and the Fan Tray accessory (3 A), for each of the DC power sources (DC power A and DC power B).

Fuse locations and ratings are shown below:

The DC/Alarm/Fuse Block Cable Assembly box contains:

• One DC/Alarm/Fuse Block Cable Assembly, with fuses pre-installed

If multiple DC/Alarm/Fuse Block Cable Assemblies are ordered, they may be packed in the same shipping container, or be shipped separately.

DC/Alarm Cable Assembly

The DC/Alarm Cable Assembly connects the existing -48-VDC source in the room to the CBA1048 and Fan Tray (optional), and the Fan Tray alarm output to the CBA1048 fan alarm input. DC supply A and B wires are pigtails, allowing the greatest connection flexibility to the DC supply. It is intended for use with external (non Tellabs-supplied) fuse/breaker panels and DC power sources.

Note: The DC/Alarm Cable Assembly does not contain a fuse block in the DC supply wires. The DC supply wires must be connected to a fuse or breaker panel in the room.

The DC/Alarm Cable Assembly has the following connectors/terminations:

• Two sets of three pigtails to connect with external fuse/breaker panels for DC power A and DC power B
• One fourteen-pin Molex connector to mate with the Fan Tray front panel connector
• One four-pin connector to plug into the fan alarm input on the CBA1048 backplane PCB
• Six wires ending in ring lugs to attach DC power A and DC power B wires to the CBA1048 power input screw-terminal barrier strip.

The DC/Alarm Cable Assembly box contains:

• One DC/Alarm Cable Assembly

If multiple DC/Alarm/Fuse Block Cable Assemblies are ordered, they may be packed in the same shipping container, or be shipped separately.