Table 7-1: Tpu Tributary Protection Modules - Eci Telecom XDM-100 General Description Manual

Miniature mspp for metro-access and cellular networks

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Table of Contents

Physical Description

TPM (Tributary Protection Module)

The TPMs provide protection to PIMs and electrical SIMs. Client traffic is

connected directly to the TPM, and the TPM is connected by traffic cables to the

XDM-100 main and protection modules. Power and control buses are connected to

the TPM via the TPU backplane.

The TPMs include switching relays that are activated by the active MXC (via the

TCF module) upon detection of a faulty PIM or SIM. When activated, these relays

route the traffic from the faulty to the protection I/O module.

TPMs support 1:1 and 1:3 protection schemes for PIMs and electrical SIMs. A TPM

for 1:1 protection connects to one main and one protection I/O module and occupies

one TPU slot. A TPM for 1:3 protection scheme connects to one protection and three

main modules and occupies two TPU slots.

1:1 and 1:2 protection schemes can also be implemented using 1:3 TPM modules

connected to one protection and one or two main I/O modules.

Four slots are allocated in the TPU shelf to accommodate the various types of TPMs.

TPMxx_1 modules for 1:1 protection schemes can be installed in any of the TPM1

to TPM4 slots without any limitations. Two TPMxx_3 modules (for 1:3 protection)

can be installed in the TPU, or a mixed configuration of one TPMxx_3 and two

TPMxx_1 can also be accepted.

Table 7-1 lists the TPM modules data configuration.

TPM2_1

TPM2_3

TPM-H_1

TPM-H_3

TPM-E_3

TPM2_63_2

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