[cisco-voip] Siemens 100K vs Cisco 7.5K

[Bill Woodcock]

      On Fri, 14 May 2010, Andrius Kislas wrote:
    > maybe someone knows a reason why Cisco has a 7500 IP phones limitation
    > on one server while Siemens HiPath8000 states they can handle 100.000 IP
    > phones per server? Even more interesting is that Cisco uses lightweight
    > SCCP while Siemens uses SIP. Both companies use the same industry
    > standard servers so what might be the reason for such big difference?

Cisco has been hamstrung by their acquisition of Selsius.  Selsius was an 
early acquisition, that pre-dated the final ratification of SIP, so wasn't 
standards-based.  By dint of their early acquisition, they wound up having 
disproportionate political power within Cisco's decision-making processes.  
So they've always pushed their proprietary (and very early) "Skinny" 
protocol, squashing SIP development within Cisco whenever possible, taking 
revenue credit for phones sold, even if the phones were for use in SIP 
installations, making it impossible to buy phones pre-loaded with SIP 
images, etc., etc., etc.

So, Cisco wound up behind where they should be in the voice market, no 
matter how hard the hardware and SIP guys worked.

                                -Bill