RAD Data comm IPmux-11 operation manual TDMoIP Operation Modes, Fiber Optic Interface Options

Installation and Operation Manual Chapter 1 Introduction

IP

The data stream coming from the E1 or T1 port is converted into IP packets that are transported over the Fast Ethernet ports, and vice versa.

TDM bytes are encapsulated in a UDP frame that runs over IP and over Ethernet.

The number of TDM bytes in an IP frame is configurable for throughput/delay tradeoff.

Each device has a single IP address (host IP). A configurable destination IP address is assigned to the IP packets. IP ToS field support can be configured for IP level priority.

The Ethernet ports can be either UTP or fiber.

•Fiber option – standard 100BaseFx full-duplex port (see Table 1-1).

•UTP option – A standard 10/100BaseT half/full duplex port with autonegotiation and automatic crossover support. If autonegotiation is disabled, Ethernet mode should be configured.

Table 1-1. Fiber Optic Interface Options

Wavelength	Fiber Type	Transmitter		Power		Receiver	Loss		Budget
		Type				Sensitivity			[dBm]
[nm]	[μm]			[dBm]		[dBm]
							[dB/km]
				Min	Max		Min	Max
1310	62.5/125	LED	-19		-14	-32	1	4	10*
	multimode
1310	9/125 single	Laser	-15		-7	-34	0.5	0.8	16*
	mode

*Permitted fiber optic cable length differs according to fiber characteristics, splices, and connectors.

To calculate optical budget:

Optical Budget [dB] =

⏐Receive Sensitivity⏐–⏐Optical Power⏐–3 (Aging) – Connectors/Patch Panels Loss

To calculate distance:

Distance = Optical Budget/Maximum Loss

MPLS

IPmux-11 encapsulates TDM data with MPLS labels for transporting it over MPLS networks (TDMoMPLS). Saving up to 24 bytes of overhead in comparison to the standard TDMoIP encapsulation, TDMoMPLS is ideal for bandwidth-sensitive networks.

TDMoIP Operation Modes

E1/T1 operation modes are:

•Unframed E1/T1 over UDP over IP over Ethernet

•Fractional E1/T1 over UDP over IP over Ethernet

•Fractional E1/T1 with CAS over UDP over IP over Ethernet.

IPmux-11 Ver. 2.00 Overview 1-3