I currently have a customer who wants to use CUBE for inbound DTMF conversion:-
Q1) Currently, my customer topology is as follows:-
LAN ---- CME (2901) ---- FW ---- 2821 ---- Internet
Is it true that I can't put the CUBE on the 2901, and i have to put CUBE on the 2821 because the CUBE router must be a different router than the CME?
Q2) My customer 2821 currently doesn't have any Voice interface cards at all. If my customer buy CUBE license + relevant IOS on this 2821, and they want to have a maximum of 8 (eight) voice calls with Inband DTMF tone conversion, how many DSP should my customer purchase? The reason is when i checked the DSP Calculator, none of the criteria refers to Inband DTMF tone conversion.
Q1) Yes, you need a separate ISR or ASR router for CUBE due to multiple reason of CPU, DSP resources, features, IOS, platform, licenses. It is recommanded to deploy CUBE on ISR G2 2900/3900 for redundancy purposes. For IOS, I recommanded CUBE 1.4 IOS 15.1(1)T at least to have a better set of monitoring/reporting capabilities for SIP.
Q2) DSP resources calculation is very complicated since it is depending on trancoding (codec, protocol), transrating (packetlization), DTMF, call flow, etc. To have a better idea how much DSP resources it needed, you have to know a little more about the traffic and call flow. What type of codecs it will support, what type of calls: H323/SIP only or both, SRTP/RTP, DTMF interworking, video or just audio; and also based on the PVDM types.
After you have all the information regarding the DSP resources, you can go to the following sites for more information:
UC Sizing Tool (currently requires partner login) – includes GW and DSPs
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...