12-02-2009 07:06 PM - edited 03-15-2019 08:39 PM
Compared with CISCO2811-CCME/K9, how about C2901-CME-SRST/K9 's performance on voice?
12-02-2009 08:00 PM
Hi Chong,
is there anything in particular you want to know?
The 2900 data sheet here gives the hardware details.
http://www.cisco.com/en/US/prod/collateral/routers/ps10537/data_sheet_c78_553896.html
compared to the 2800 series
but a couple of details comparing the two.
2811 | 2901 | |
---|---|---|
SRST/CUCME | 35 phones 144 DNs | 35 phones 200 DNs |
PSTN | Up to 3 T1s or 70 simultaneous calls | Up to 4 T1s or 100 simultaneous calls |
The exact number of simultaneous calls is dependent on the other roles of the router.
Paul
12-02-2009 10:37 PM
Thanks.How many DSP numbers for PVDM3-16?Where is detailed datasheet for PVDM3? I know PVDM2-16 has only one DSP.
12-02-2009 10:48 PM
No problem,
the datasheet for the PVDM3 is available at
I believe that the DSP calculator has also been updated to support the PVDM3s also
Paul
12-03-2009 12:52 AM
What's 100 simultaneous calls ? 35 phone can support this?
12-03-2009 02:32 PM
Hi,
well technically speaking, 35 phones can support 100 simultaneous calls but the users would be pretty busy.
What I actually meant was that 35 phones can be supported in CME or SRST, that is, 35 phones registered directly to the ISR.
The 100 simultaneous calls relates to the E1 or T1 DS0 capacity. If your phones (any number) are registered to a CUCM server and you're using the ISR as a PSTN gateway then it supports having 100 calls to the PSTN, anything more than that and you're overloaded the gateway.
Please remember to rate helpful posts.
Paul
12-03-2009 06:35 PM
Thanks again. 100 calls is refered to outside PSTN line? 35 phone is registered with local IP phone under CME, is it right?
12-03-2009 07:01 PM
No problem at all,
Yes, that is right.
Paul
01-19-2010 04:38 PM
More info on the Cisco 2900 Integrated Services Router (ISR) can be found at http://www.ciscobuy.com/cisco-routers/cisco-2900-isr
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