RAD Data comm IPmux-11 Frame Format, Single Source Clock Network, TDMoIP, TDM Payload

Chapter 1 Introduction Installation and Operation Manual

Figure 1-4. IPmux-11 in External Clock Mode

Single Source Clock Network

When a common clock is not available on all the ends of the network, one of the IPmux-11 devices is configured to work in loopback timing, while the other IPmux-11device is configured to work in adaptive timing (see Figure 1-5).

Figure 1-5. IPmux-11 in Adaptive Timing Mode

Frame Format

TDMoIP

The Ethernet frame sent by IPmux-11 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 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.

CRC

TDM Payload

CW

UDP

IP

ETH

Figure 1-6. TDMoIP Frame Structure

1-8 Functional Description IPmux-11 Ver. 2.00