09-17-2010 08:08 AM - edited 03-16-2019 12:50 AM
I need to figure how what gateway or device I would use to handle 200 concurrent SIP calls over a SIP trunk to a SIP provider.
Would I split across multiple routers?
Would it be a ISR with a CUBE with proper licensing?
Would I need lots of DSP resources?
Are there tools available?
I need to handle the associated MTPs and IOS conference bridge with a Max of 20.
We are running Call Manager 7.1.5 today.
Solved! Go to Solution.
09-17-2010 08:41 AM
Not sure which is the right number because you mention 150 in the title but then 200.
All the figures I'll mention are for CUBE usage.
A 2911 can handle 200 calls in flowthru as max, but that would be too tight.
A 2921 can handle 400 calls in same conditions.
Flow around numbers are higher for each. (800/1500)
If you need SW MTP as well, then a 2921 support Max 220 calls.
2951 handles 330.
You can use the DSP calculator to size the MTP and CFB, just leave the TDM page blank.
http://www.cisco.com/web/applicat/dsprecal/dsp_calc.html
HTH
java
If this helps, please rate
www.cisco.com/go/pdihelpdesk
09-17-2010 08:41 AM
Not sure which is the right number because you mention 150 in the title but then 200.
All the figures I'll mention are for CUBE usage.
A 2911 can handle 200 calls in flowthru as max, but that would be too tight.
A 2921 can handle 400 calls in same conditions.
Flow around numbers are higher for each. (800/1500)
If you need SW MTP as well, then a 2921 support Max 220 calls.
2951 handles 330.
You can use the DSP calculator to size the MTP and CFB, just leave the TDM page blank.
http://www.cisco.com/web/applicat/dsprecal/dsp_calc.html
HTH
java
If this helps, please rate
www.cisco.com/go/pdihelpdesk
09-17-2010 08:48 AM
Thanks for the feedback and good catch. The numbers say 150 but I keep thinking that I need to scale for 200.
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