VCPM Module 231Installing/RemovingSNDE CardSNDE card should be installed on the main board and the ESM slot on the MSCAcard of MSR 20/30 router. The board that provides ESM slots is referred tohereafter as mother board. Suppose the mother board is uninstalled and put onthe workbench.Removing SNDE cardFollow these steps to remove the SNDE card:Step 1: Remove the fastening screws on the SNDE card.Step 2: Remove the SNDE card from the mother board. Do not overexert whenremoving the SNDE card because the connector of the daughter board is still onthe mother board.Step 3: If no SNDE card is to be installed, for an MSCA card, remove the fourscrews fastening the metal standoff on the daughter board and take the fourmetal standoffs. For other mother boards, remove the four metal standoffs.Installing SNDE cardFollow these steps to install SNDE card:Step 1: Confirm the correct position of the SNDE card on theStep 2: For MSCA card, fasten the four metal standoffs which fasten and supportSNDE card. For other mother boards, fasten the four metal standoffs on themother board. Step 3: Install the SNDE card on the mother board and fasten itwith four screws. During installation, align the two connectors under the daughterboard to the connectors on the main board to avoid damage to the connectors.c CAUTION: You should connect a cable to the port with the correct mark.Misplugging is prone to impair the interface module and even damage the router.VCPM ModuleIntroduction VCPM, voice co-processing module, provides transmission channel between DSPstrip and system memory for voice data, thus implementing TDM HW exchangefor each PCM data voice channel.VCPM module is a required module for voice communications of routers.Table 174 Description of the LEDs on the SNDELED DescriptionESMx Green: SNDE card is in the slot and is operating normally.Yellow: SNDE card is in the slot but cannot be accessed by the router.Note:x means the number of the slot the ESM LED is in.
