03-17-2010 08:25 AM - edited 03-21-2019 02:19 AM
so ... i bought two 7975s to replace two SPA525Gs on an UC520 (SCCP).
so far i had no luck getting them to work. they hang at "obtaining IP address" (but that's just what the display says, in fact they successfully lease an IP) and their logs show dozens of TFTP errors and try to contact CME instances with weird hostnames that don't exist. also, it seems that unlike the SPA525Gs, the 7975s can't be FW updated via their web UIs, is that correct?
any ideas where i could start looking?
thanks,
Tom
03-18-2010 03:03 AM
lightxx1980 wrote:
so ... i bought two 7975s to replace two SPA525Gs on an UC520 (SCCP).
so far i had no luck getting them to work. they hang at "obtaining IP address" (but that's just what the display says, in fact they successfully lease an IP) and their logs show dozens of TFTP errors and try to contact CME instances with weird hostnames that don't exist. also, it seems that unlike the SPA525Gs, the 7975s can't be FW updated via their web UIs, is that correct?
any ideas where i could start looking?
thanks,
Tom
Hi Tom,
Firstly you need to check the following:
Phone Loads located on the Flash Card, you can downloald the latest ones from the Cisco Website using your CCO credentials, you need to place them in the "phones" directory on your flash card, or alternativly you can use CCA to do this for you.
TFTP-SERVER Commands, you need to make sure that there are tftp-server commands in there that directs the system to where the files are located, they should look something along the lines of this;
tftp-server flash:phones/7975/apps75.8-5-3TH1-6.sbn alias apps75.8-5-3TH1-6.sbn
tftp-server flash:phones/7975/cnu75.8-5-3TH1-6.sbn alias cnu75.8-5-3TH1-6.sbn
tftp-server flash:phones/7975/cvm75sccp.8-5-3TH1-6.sbn alias cvm75sccp.8-5-3TH1-6.sbn
tftp-server flash:phones/7975/dsp75.8-5-3TH1-6.sbn alias dsp75.8-5-3TH1-6.sbn
tftp-server flash:phones/7975/jar75sccp.8-5-3TH1-6.sbn alias jar75sccp.8-5-3TH1-6.sbn
tftp-server flash:phones/7975/SCCP75.8-5-3S.loads alias SCCP75.8-5-3S.loads
tftp-server flash:phones/7975/term75.default.loads alias term75.default.loads
Then you need to make sure that you have the loads in the telephony-service, this should look something like this;
load 7975 SCCP75.8-5-3S
So to recap, if you have the following correctly in place, the phones should work without incident:
Last thing to do, is to reset the phone back to factory defaults so when it talks to the UC500 it rediscovers all the settings it needs, you can achieve this by doing the following;
NOTE: Make sure the phone is plugged directly into the UC500 when performing this.
You can watch what is taking place on the command line during the boot up process by typing the following command:
Router#debug tftp event
Router#term mon
To stop the above:
Router#un all
Router#term no mon
Hope this helps you out and you get the phone up and running, the 7975's are a brilliant phone, pricey but damn good to use. Although i am a big fan of the SPA525's i love what they can do and not quite sure why you are replacing them with the 7975.
Good Luck.
Cheers,
David.
03-18-2010 03:28 AM
David,
thank you very much for your competent response. unfortunately it seems i forgot to mark this thread as question so i can't assign you any points now. do you want me to recreate this thread as question?
as for why we are phasing our SPA525Gs, the problem is out of 15 phones or so 7 already died because of the PoE issue mentioned in one of my other threads:
https://www.myciscocommunity.com/thread/7126?tstart=0
seems like us European customers get the crappy flawed first gen SPA525Gs. replacing broken phones on a regular base is a nuisance, thats why we are replacing them with 7975s ;)
thanks,
Tom
03-18-2010 02:59 PM
Hi Tom,
do you want me to recreate this thread as question?
Sorry what poins are you talking about? I was not aware the ran a point system on here
no need to recreate the thread, i am more interested in seeing you helped then to worry about points :Das for why we are phasing our SPA525Gs, the problem is out of 15 phones
or so 7 already died because of the PoE issue mentioned in one of my
other threads:
Ok gotcha wasnt aware that there was a problem with them, must have ben a bad batch of them i guess.
Keep us informed on how you went with the setup of the 7975's would like to know if you got them to work without any issues.
Cheers,
David.
03-18-2010 10:36 PM
David,
thanks for checking back in. unfortunately, i failed miserably. i bricked one of the 7975s during a firmware update, and don't yet know how to recover without RMAing the phone (someone reloaded a catalyst which PoE'd that particular phone).
the other one works but i'm not sure _why_ it actually works. seems i'm lacking fundamental knowledge on how things are done in CME. i thought i would just learn by doing, but obviously i was wrong.
like yesterday, when i thought i finally had put all bits and pieces together and recreated my CNF files, my SPA 525Gs would suddenly reboot and got stuck in an infinte loop trying to download their .xml files ... sigh ... not like i had done ANY changes to the default 525.xml.cnf or the SEP
i also tried this guide from our gods themselfs (http://www.cisco.com/en/US/products/sw/voicesw/ps4625/products_configuration_example09186a008042326b.shtml) but failed again. seems it won't even work when i take the official Cisco sample config 1:1 and just replace the MAC addresses ..
thanks,
Tom
03-19-2010 04:40 AM
Hi Tom,
If you think the phone is Bricked you can try to Factory reset it again, however as before try and plug the unit directly into the PoE device and if possible directly into the UC-500, however the way you explain it is that the phone is being plugged into an expansion switch.
In general, and i do mean in general, you shouldnt have to do anything on the CME other then make sure the files are on the flash card, and that the system knows where to look for the files, and that Telephony services knows you want it to look for those files when the phones are plugged in. There is not much else that you should worry yourself with, if it is not working then there is another reason as to why this is happening.
In any event, i am happy to look at this issue for you if you can provide remote access via SSH, and given the possible time zone differences we would need to schedule a time that is suitable for both of us.
Happy to try and help you sort this problem out, even if i have to remote desktop to your system we can do it that way as well :)
Cheers,
David.
03-19-2010 05:07 AM
i appreciate any help i can get! do you have ICQ or MSN / facebook or another IM? i can create you an ACL allowing SSH into the box any time as long as its not business hours (i'm CET+1 here).
would be really cool if you could take a peek at my config. i can email you the running-config as well if you like?
thanks,
Tom
03-19-2010 05:21 AM
Hi Tom.
I have two MSN one is for work, they are listed below:
wicomoz-at-hotmail.com (Personal One)
kingfireblade-at-hotmail.com (Work one)
If you add both of them you are bound to get me on one of them :D
Once you get me on it i will log into your setup and we can talk through it over MSN
Cheers,
David.
03-24-2010 01:51 AM
Regarding the SPA525 POE Problems stated in this thread.
https://www.myciscocommunity.com/docs/DOC-15522
There is an SPA525G Product Bulletin that was issued at the end of March 2009.
This PB brought attention to a small number of SPA525G units that had a defective transformer in the PoE circuitry.
Unfortunately, it sounds like you got a few of the units from this batch. If you PM me your contact information, I would be happy to have the Product Manager call you and explain.
Steve DiStefano
Systems Engineer
US Partner Sales
03-25-2010 11:35 PM
Steve,
thanks for your post.
however, its all fine now. we got all our defective 525Gs replaced now.
I'm not less of a Cisco fan because of that issue. errors happen ;)
thanks,
Tom
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