one of my customer has one 3825 with NM-HDV2-1T1/E1 installed which only has 1T1 PORT.right now, they are going to order an extra T1. so what part they need to order to get an extra T1 port? I hope they dont need to order a NM-HDV2-2T1/E1 card. thank you in advance
The vwic2-1mft-t1/e1 and vwic2-2mft-t1/e1 differ in cost only by 700$ (list price) so i would go with the two port if at all possible. Like Ken said in his post, you may need additional PVDM2s to support the extra t1. NM-HDV2 has 4 pvdm slots. PVDM2s are available in 8, 16, 32, 48 and 64 channel densities. A single t1 occupies 24 channels. You do the math.
About the PVDM2, the 3825 already has a PVDM2-64 on NM , and there will be 2 PRIs(48 channels), technically, it should cover the need. but when I run the DSP calculator, it gives me the DSP allocation separately. for example, if I use vwic2-1mft-t1/e1 on the HWIC slot. the results it gives me are something like this : how many DSP resource needed on Board, how many DSP resource needed on NM. my question is the DSP resource on NM can be shared by T1 on HWIC card. if so . the current pvdm2-64 is sufficient , if not, we have to order more . please advice, thanks
another question regarding the DSP, I have the impression from past that Hardware based Conference bridge need to use the separate DSP module. for example, even I have some DSP resource available the pvdm2-64 after the voice termination. I can't use it as the conferencing. Can you or other pros confirm it for me? thank you very much
You can use some of the remaining DSPs for Conference bridges. I am sure with what you have left you may be able to do only 2-4 sessions. Once you configure the conferencing profile you can set the max sessions.
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