RAD Data comm IPmux-1E operation manual Frame Format, IPmux-1 in Adaptive Timing Mode

IPmux-1/1EInstallation and Operation Manual

Chapter 1 Introduction

E1/T1 Device

Loopback Timing Mode

Adaptive

Mode

E1/T1 Device

Master Clock

E1/T1

IP over

E1/T1

E1/T1

Source Device

E1/T1

Ethernet

IPmux-1

IPmux-1

Remote Loopback

Timing Device

Figure 1-14. IPmux-1 in Adaptive Timing Mode

Adaptive

Grooming

ISDN

LBT

of BRI

LBT

E1

Adaptive

IP over

V5.1

ISDN

Ethernet

Grooming of FXS

Telephone

IPmux-4/16

in E1 CAS

Switch

ISDNAdaptive

POTS

Figure 1-15. IPmux-1E in Adaptive Timing Mode

Frame Format

The Ethernet frame sent by the IPmux-1 is a UDP datagram that transfers E1/T1 payload bytes over IP over Ethernet (UDP payload + UDP header + IP header + Ethernet header).

The UDP payload size is equal to TDM bytes per frame (TDM bytes/frame configuration).

Table 1-2specifies the structure of the different headers, special fields, and the payload in the Ethernet packet.

MAC

IP

UDP

Payload

Figure 1-16. TDMoIP Frame Structure

Functional Description 1-17

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