RAD Data comm IPmux-11 - Manual (Page 17)

Installation and Operation Manual Chapter 1 Introduction
IPmux-11 Ver. 2.00 Overview 1-3
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
[nm]
Fiber Type
[μm]
Transmitter
Type Power
[dBm]
Receiver
Sensitivity
[dBm]
Loss
[dB/km]
Budget
[dBm]
Min Max Min Max
1310 62.5/125
multimode
LED -19 -14 -32 1 4 10*
1310 9/125 single
mode
Laser -15 -7 -34 0.5 0.8 16*
* 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.