I'm not going to pull any punches here; in my opinion, Cisco & SIP is terrible. According to the Cisco rep I spoke with, Cisco has officially abandoned plans to use SIP as the primary protocol for their VOIP systems (Call Manager).
They have effectively split their phones into two areas. The Cisco Call Manager stuff which is heavily focused on SCCP, and the Linksys/Sipura stuff which is focused on SIP but also supports SCCP (and has SPA in the model number). The SPA line of phones are now "Cisco SPAXXXX" (the Linksys name has been dropped entirely). The product over-view is here: http://www.cisco.com/en/US/products/ps10499/index.html You can still get the Linksys phones but for how much longer? You'll note the SPA504 is almost identical to the SPA942 and the SPA525g is a SPA962 on steroids. Both are provisioned in the same "Linksys" way and the web interfaces have a familiar look & feel. However, we have one of both of these phones and I wouldn't inflict them on my worst enemy. The sound quality is horrible. Let me repeat that because you probably couldn't understand me. THE SOUND QUALITY IS HORRIBLE. Of all the VOIP phones I've tested over the years, these two phones are by far the worst I've ever tried. The handsets are horribly flawed. When we switched them with handsets from a SPA942, the sounded fine. So unless Cisco changes their handsets I would never buy these phones. John On Fri, 2010-04-09 at 07:50 -0400, Bruce N wrote: > I would also like to know about Cisco phones in general and how they perform > with Asterisk. Limitations and advantages if any over a let's say Aastra set? > P.S. Why did you opt to flash firmware to SIP Reza? Would you have lost > functionality with chan_sccp? > Thanks,Bruce > > > Date: Fri, 9 Apr 2010 07:33:29 -0400 > > From: [email protected] > > To: [email protected] > > Subject: [on-asterisk] Re: Cisco 7940 SIP Firmware > > > > In response to my own email - I managed to upgrade this and get things > > working. Initial config and upgrade from TFTP was a pain, but the phone > > seems to work. > > > > This is the 1st Cisco phone I've bought for testing - but I think I'm going > > to stick to Aastra, Linksys and certain versions of the Polycom. > > > > What are your opinions on the Cisco 7940 series with SIP firmware? > > > > -- > > Toronto based VoIP / Asterisk Trainer, > > I.T. Consultant and Hosted PBX Solutions Provider. > > +1-647-476-2067. > > http://www.linkedin.com/in/seminar > > > > > > > > On Fri, Apr 9, 2010 at 5:33 AM, Reza - Asterisk Consultant < > > [email protected]> wrote: > > > > > Would someone kindly provide me CISCO 7940 SIP Firmware for upgrade? I > > > managed to get a package, but its obviously incomplete - as my phone now > > > halts at TFTP Timeout - after a partial upgrade. Checking logs of TFTP > > > indicates the phone has gone in an infinite loop trying to locate the > > > necessary files. > > > > > > Thanks in advance! > > > > > > Best, > > > Reza. > > > > > > -- > > > Toronto based VoIP / Asterisk Trainer, > > > I.T. Consultant and Hosted PBX Solutions Provider. > > > +1-647-476-2067. > > > http://www.linkedin.com/in/seminar > > > > > > > > _________________________________________________________________ > Videos that have everyone talking! Now also in HD! > http://go.microsoft.com/?linkid=9724465 -- John Lange http://www.johnlange.ca --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
