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A DSP card is a digital signal processor card with DSP resources that can be used for VoIP calls, conferences, the Unified Mes-
saging feature, and the DISA/OGM feature. The DSP card is compliant with ITU-T G.729A and G.711 codec methods.
To operate the IP trunk and/or IP extension, DSP S card must be installed.

When installing or removing the optional service cards, do not put pressure on any parts of the mother board. Doing so may
result in damage to the PBX.

The DSP Resource Advisor can be used to calculate DSP resource usage easily.

The number of resources provided by each type of DSP card is as follows:

Either 1 or 2 IP addresses must be assigned to each DSP card, depending on the type of DSP card. You can assign IP
addresses to the DSP cards during Easy Setup Wizard or through system programming.
For details about Easy Setup Wizard.
For details about assigning IP addresses through System Programming.

DSP Card Type

Number of Resources

DSP S

63

DSP M

127

DSP L

254

DSP Card Type

Number of IP Addresses

DSP S/DSP M

1

DSP L

2

Screws

DSP Card

DSP Card

DSP Card

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11

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