[Asterisk-Users] Cisco 7970G VOIP phones

Jason p voiceoveripguru at gmail.com
Thu Nov 18 08:53:40 MST 2004


all my 7960's work great.  loading the new sip image was no problem ,
took about 5 min. I even got them from ebay =>

Jason


On Wed, 17 Nov 2004 14:52:32 -0800, Tracy R Reed
<treed at copilotconsulting.com> wrote:
> On Wed, Nov 17, 2004 at 05:07:33PM -0500, Bob Willock spake thusly:
> > I just bought a couple of these Cisco 7970G phones and it seems that they
> > require a SIP image binary file to load when the phone boots and this file
> 
> Cisco phones are hugely overrated. I have deployed a number of them and I
> have decided to switch to Polycom. Flashing them is a PITA. Especially if
> you get old ones. The phones always come with SCCP. Then you have to pay a
> bunch of money (on top of the already expensive phones) to get a SIP
> license.  Managing hundreds of SIP*.cnf files is a huge pain too, I have
> put them into a database and generate them as needed.
> 
> Hell, the power supplies for these things alone cost $35! Oh, and make
> SURE you get a real Cisco power supply when you buy your phone. I found
> out the hard way. I had been getting the power cubes for $10. They were
> listed as the same part number as the Cisco power cube. Then I saw real
> Cisco power supplies and noticed they looked different and found the price
> to be $35. Now I know why several of my phones do not work properly! I
> swapped in Cisco power supplies and they work better. Not Cisco's fault
> but another thing to look out for.
> 
> Then you find that your phone has an older version of SCCP which won't
> retrieve the new SIP images with long filenames. So you upgrade to the
> most recent short filename SIP image and find that it won't take a
> standard SIPDefault.conf file because it is too big so you provide a very
> minimal SIPDefault.conf and finally upgrade to the latest SIP firmware.
> Now you can configure and use the phone. My first few 7960's were used. DO
> NOT buy used 7960's! They usually aren't that much cheaper (none of the
> ones I found anyway)
> 
> Cisco doesn't support Asterisk, open source, or open standards. Don't use
> Cisco phones!
> 
> --
> Tracy Reed    http://copilotcom.com
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> Info: http://copilotconsulting.com/sig
> 
> 
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