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LTI MM300SBP-G2 Quick Installation Manual

Megabit modem
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O
VERVIEW
The LTI DataComm Megabit Modem MM300SBP-G2 is a versatile, ruggedized high-speed
single wire pair modem used to extend an Ethernet LAN data connection in a point-to-point
application (also called back-to-back) implementation to another modem. The modem uses
Single-Pair High-Speed Digital Subscriber Line (SHDSL) technology with automatic rate-
adaptation to achieve symmetric data rates from 64 to 2304 kbps based on the connection
distance and line condition.
The modem connects through its 10/100 Base-T port to a PC or Local Area Network (LAN).
The DSL port (via bare wire binding posts) provides access to the following type of
connection: connection to another MM300SBP-G2 which provides access to a remote PC or
small LAN via its bare wire binding posts.
Figure 1
shows the MM300SBP-G2 connected to a PC using the black straight-through
cable.
Figure 2
shows the MM300SBP-G2 connected to an Ethernet Switch using the Yellow
cross-over cable.
Both Black and Yellow cables can be used for the Ethernet switch connection
(MDI, MDI-X port or Auto). The Ethernet switch can have either MDI or MDI-X
ports. The Yellow cable is an example of one kind of Ethernet switch
connection.
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Local User
MM300SBP-G2
Figure 1. MM300SBP-G2 Connected Directly to PC
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Ethernet Switch
Local User
Figure 2. MM300SBP-G2 Connected to an Ethernet Switch
Megabit Modem
Quick Installation Guide
`
DSL
Remote Network
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DSL
MM300SBP-G2
Remote Network
®
MM300SBP-G2
In this point-to-point application, one MM300SBP-G2 is automatically set to remote CPE
mode while the other modem is set for Central Office (CO) mode. This negotiation takes place
at modem start-up and is completely automatic. By bridging traffic between these two
modems, you essentially create one extended LAN that allows the use of a single IP subnet.
Avoid using IP Address 172.17.0.1 in your network since it is used for
MM300SBP-G2 internal management. If this IP Address is needed, contact
Technical Support on page 8 on how this can be changed.
F
EATURES
The MM300SBP-G2 provides Media Access Control (MAC) layer bridging of frames received
on its LAN and WAN interfaces. It provides transparent address learning for the LAN
interface. Address entries are aged out after 300 seconds. It provides transparent forwarding
of VLAN and non-VLAN Ethernet frames up to 1536 Bytes.
The DSL connection requires a dedicated single-pair wire to connect the local and remote
units. The modem compensates for DSL (Tip and Ring) reversals; therefore, rewiring the
junction box should not be necessary.
The MM300SBP-G2 is easy to install: connect the cables and it is ready to use. The modem
may be installed on a desktop or mounted on a wall.
The MM300SBP-G2 allows packet sizes up to 1536 Bytes to accommodate
Virtual Local Area Network (VLAN).
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Page 1 of 8

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Summary of Contents for LTI MM300SBP-G2

  • Page 1 (MDI, MDI-X port or Auto). The Ethernet switch can have either MDI or MDI-X The MM300SBP-G2 is easy to install: connect the cables and it is ready to use. The modem ports. The Yellow cable is an example of one kind of Ethernet switch may be installed on a desktop or mounted on a wall.
  • Page 2 VERHEATING Weight 1.38 lb. (0.63 kg) If you plan to operate multiple MM300SBP-G2 units in a combined area, take the following precautions in order to avoid overheating the units: Environmental: • Do not stack MM300SBP-G2 units on top of each other.

  • Page 3: Attach Feet

    Attach one of the adhesive-backed rubber feet to the recess in each of the four corners on Mounting holes on the bottom of the modem provide the option to mount the modem on a the bottom of the modem (Figure wall. Two Phillips head screws are provided per MM300SBP-G2. Step Action Rubber Feet Figure 4 as a guide for wall mounting.

  • Page 4: Connect The Cables

    3. Connect the Cables MM300SBP-G2 Step Action 10/100 Base-T Port Connect the cables to the ports as indicated in Figure 5 Figure NOTE: For instruction on the Reset Button, go to Reset to Factory Defaults Power Connector using the Reset Button on Page...

  • Page 5: Led Status Indications

    5. Monitoring the DSL Line 6. LED Status Indications Refer to Figure 8 for monitoring the DSL line. Also refer to Table 1 on page 5 for the Table 1 summarizes the modem’s normal operational status as provided by the front panel modem’s normal operational LED Status.

  • Page 6: Reset To Factory Defaults Using The Reset Button

    8. Reset to Factory Defaults using the Reset Button State Description The reset button on the back panel of your modem is provided to reboot the modem without the need to remove power. Under normal circumstances, you will not have to use the reset button.
  • Page 7 ETERMINING THE Figure 10 data reflects the maximum performance under no noise conditions. The actual reach depends on the condition of the line and the presence of bridge taps, splices, line noise, etc. Refer to Figure 10 for maximum data rate vs. distance and wire gauge. Noise, crosstalk and other external impairments reduce these numbers, and therefore, would fall under the plotted lines in Figure 2,304...
  • Page 8 Contents herein are current as of the date of publication. LTI DataComm reserves the right to change the Telephone: 1.800.677.5050 (toll-free) or 1.703.581.6868 contents without prior notice. In no event shall LTI DataComm be liable for any damages resulting from loss of Fax: 1.703.581.6861...

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