Main differences between Huawei SDH OSN3500 equipment N1 and N2 veneers

A: The types of veneers included in each are:

N1 series single boards: SSN1SEP1; SSN1SEP; SSN1SLQ1; SSN1SL1; SSN1SLQ4; SSN1SLD4; SSN1SL4; SSN1SL16;

N2 series veneers: SSN2SLQ1; SSN2SL1; SSN2SLQ4; SSN2SLD4; SSN2SL4; SSN2SL16; SSN2SL64;

The basic rule of N1/N2 naming is that N1 single board uses the company's own chip, such as SD543 currently used; N2 single board uses TSOT1610G.

N2 single board supports TCM function, N1 does not.

N2 single board supports Au3 level service configuration and alarm, AU3 level high order channel overhead maintenance, etc.; N1 single board does not support.

For loopback, N2 single board supports internal and external loopback of optical port; N1 single board supports internal and external loopback of optical port and internal loopback of VC4 channel.

For loopback reverse insertion AUAIS, N1 and N2 single boards have the following in common: external loopback is possible; internal loopback is not possible.

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