NetComm Gateway Series manual Straight and crossover cable configuration, Straight-Through Cabling

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Straight and crossover cable configuration

There are two types of the wiring: Straight-Through Cables and Crossover Cables. Category 5 UTP/STP cable has eight wires inside the sheath. The wires form four pairs. Straight-Through Cables has same pinouts at both ends while Crossover Cables has a different pin arrangement at each end.

In a straight-through cable, wires 1,2,3,4,5,6,7 and 8 at one end of the cable are still wires 1~8 at the other end. In a crossover cable, the wires of 1,2,3,6 are reversed so that wire 1 become 3 at the other end of the cable, 2 becomes 6, and so forth.

To determine which wire is wire 1, hold the RJ-45 cable tip with the spring clip facing towards the ground and the end pointing away from you. The copper wires exposed upwards to your view. The first wire on the far left is wire 1. You can also refer to the illustrations and charts of the internal wiring on the following page.

Straight-Through Cabling

	Figure 3

Wire	Becomes

1	1
2	2
3	3
6	6

Cross-Over Cabling

				Figure 4

		Wire		Becomes

		1		3
		2		6
		3		1
		6		2

Note:	To prevent loss of signal, make sure that the length of any twisted-pair connection
	does not exceed 100 metres.

SmartVoice Gateway(s) User Guide	91
YML832 Rev2

Image 91

Contents Reference Guide Contents To ensure your Gateway complies with Australian Standards Important NoteProduct Overview IntroductionComputer/Network Broadband ServiceVoIP Service Items that you will need and things you will need to knowVoice Features NetComm SmartVoice Gateway FeaturesAdvance Firewall and DoS Protection Configuration & Maintenance Features are only available in models which have FXO ports General SpecificationsNetwork SmartVoice Gateways User Guide YML832 Rev2 Rear Panel all models Restore the GatewayConnecting your SmartVoice Gateways Installation and ApplicationsGateway Assigned with a Public IP Address Network ConnectionsNetwork requirements Requirements Gateway behind a NAT/Firewall NetworkStun client Needs to be set up as either in static IP, DHCP, or PPPoE Integrating the SmartVoice Gateway with PBX Telephone ConnectionIntegrating the SmartVoice Gateway with PBX Integrating the SmartVoice Gateway with PBX Instructions Configuring the Gateway via WEB BrowserIP Configuration Setting WAN Port Network SettingsSetting Dynamic IP Dhcp Clone MAC DNS SettingsNetwork Settings LAN LAN interface modeWAN QoS QoS SettingsNAT/DDNS NAT Traversal Example DdnsPrefix Number Rules Telephony SettingsHotline Functions FXO Line VoIP call in optionsDescription SIP Settings 164 SmartVoice Gateways User Guide Each line registers to Proxy independently FXS/ FXO Representative number registers to ProxyPrivate Network Server SettingsPrivate Network Numbers Calling Feature Instructions Calling FeaturesAdvanced Options Payload Type payload type of RFC2833 Flash Time Line SettingsCodec Settings Fax Settings Drop Inactive Call Digit Map Phone Book Speed Dial Caller Filter Transit Call Control Gateway a PIN Code * Gateway B Number Dialing principle to enable PIN codeLong Distance Exception Table Long-Distance Control TableBusy Tone Cadence Measurement CPT/Cadence SettingsCPT parameters Table CPT Auto Detect Direct Connection to Pstn SmartVoice Gateways User Guide YML832 Rev2 Connected to a PBX Extension Line 36008914 Filling in the CPT Table Save SettingsCurrent Status and System Information RTP Packet Summary Stun Inquiry Ping Test Port Filtering IP Filtering MAC Filtering Virtual Server DMZ URL Filter Special Applications DoS Prevention Settings Enable Source IP Blocking Block the IP NTP Network Time Protocol Backup and Restore ConfigurationProvision Settings System Operations Save Settings Software Upgrade Logout Configuration Methods Configuring the Gateway via IVRPreparation Inquire Current Gateway’s WAN Port IP address IVR Interactive Voice ResponseDNS IP address Set/Query IVR Functions TableSet/Query Gateway Telephone Number Representative Number Adsl PPPoE Settings IP Configuration Settings WAN port Static IP SettingsSelect PPPoE PPPoE Account SettingsPPPoE Password Setting Save Settings and RestartPPPoE Character Conversion Table Instruction Dialing and dialed number routing principleDialed Number Processing Flow End 10BASE-T Appendix a GlossaryDNS Http NAT TCP VSP RJ-45 Network Ports Appendix B Cable InformationStraight-Through Cabling Straight and crossover cable configurationCross-Over Cabling Contact Information Appendix C Registration and Warranty InformationProduct Warranty PO Box 1200, Lane Cove NSW 2066 Australia