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New Member

7975 dial random numbers when off hook

hi,

i have an issue with cisco ip phone 7975.

the customer is a bank with 5 thousends people that uses cisco ip phones.

The "top users" have cisco 7975 that have this problem:

sometime (1 time in a month) when they pick up the phone (off hook) the phone dial automatically a random number, sometime the last number dialed, sometime a number that the user has never dialed.

Does anyone have this problem?

The firmware on the phones is: SCCP75.9-0-3S

please help

23 REPLIES
New Member

Re: 7975 dial random numbers when off hook

Hi Giovanni,

I'm not aware of any such issue on CUCM. It's not firmware related, since this is a SCCP phone. The call control will be done by CUCM.

The two possibilities I could thing of are:

- Translation pattern (plar) has been configured, to force that phone to dial this number

- The phone rings when somebody pick up the phone

Regards,

Nick

New Member

7975 dial random numbers when off hook

We are haivng the same problem - was this resolved??

Thanks

Steve

Green

Re: 7975 dial random numbers when off hook

Direct Light on hook switch can cause phone to toggle on/off hook
Symptom:

Direct Light (sunlight or other form of light) can penetrate the gaps around the hook switch, causing the phone to toggle on/off hook.

This behavior has been reproduced on 7975, 7942/62 and 7945/65 phones.

Conditions:

Workaround:

none

Put your phones in the shade

Regards

Alex

Please rate useful posts

Regards, Alex. Please rate useful posts.
New Member

7975 dial random numbers when off hook

HAHAHAHAH is this for real, seeming its raining here today and has been for months im not sure if i can use tell the users this...

Thanks for the info though.

Steve

New Member

7975 dial random numbers when off hook

Folks,

We opened a TAC for this, and Cisco got a  fix for new defect CSCtz29414 will be made available in the 9.3.1 firmware release, scheduled for June.

Affected Phones for us

7942

7962

7945

7965

7975

Regards

Ratheesh Kumar

New Member

7975 dial random numbers when off hook

We are currently having this same exact problem (bug CSCtz29414) on our CUCM 8.6 deployment, however we are on firmware 9.3.1 for al our 79XX phones, has anyone seen this before?

New Member

7975 dial random numbers when off hook

Ian, have you found a solution to your problem in the meantime? I'm also running 9.3.1 on 7942/7962 (the fixed-in version as stated in the Release Notes) but still seeing the issue documented in CSCtz29414.

Any help is greatly appreciated

/David

Hall of Fame Super Silver

7975 dial random numbers when off hook

New Member

7975 dial random numbers when off hook

Thank you for taking the time Chris,

Too bad the bug has been terminated, but this is clearly a step in the right direction..

New Member

7975 dial random numbers when off hook

IIRC the "bug" was initially listed as fixed but then appeared again? I'm not certain. We're currently hit with this, and their comments about the services provisioning may make a difference, however, given the way we have things set up in this environment, we cannot set it to anything other than "both" at the moment. If this becomes enough of a pain then perhaps we'll look into that.

We were pushed into 9.3.1 for security. There was also a bug listed for 9.3.2 (??) at one point about phone calls that don't hang up until you press the end call soft key. I'm not sure which is worse. Resetting the phone makes the problem go away, but, we're not sure of the conditions that cause it to pop up in the first place. Some users have seen it happen more than once.

Oh well.

New Member

Re: 7975 dial random numbers when off hook

Check out bug CSCuc33008, seems to be the same thing. I had this issue and setting "services provisioning" to "internal" seems to have fixed it for me, or my users have not been complaining about it for the past 3 weeks.

7975 dial random numbers when off hook

WoW, this the dumbest bug I ever heard

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New Member

7975 dial random numbers when off hook

Thanks Ian, much appreciated!

New Member

7975 dial random numbers when off hook

I am experiencing this same issue. I have a TAC case open currently. We first experienced the issue when upgrading firmware on 7941/45/61/65 phones prior to a CUCM upgrade from 6.1 to 8.6. Since then I've been through 3 firmware releases and I am still having this issue. I've got somewhere between 40-50 users having this problem out of about 800 phones in my environment. I am currently on an ES of 9-3-1(9-3-1ES7S). This issue is also occuring on my phone so I know how annoying it truly is. Cisco TAC is consulting with their experts to determine the cause and an action plan for a fix to this issue. Hopefully they come up with something soon. I will keep everyone posted as to any updates.

Rich

New Member

7975 dial random numbers when off hook

Rich,

Did you try my solution?  Setting "services provisioning" to "internal" fixed it for me.

New Member

7975 dial random numbers when off hook

Yes. That was suggested by TAC. I did that last week and I am still experiencing the issue. Did you have to reset the phones or Device Pools after making the change? I asked my TAC engineer and he said that it should take effect without resetting anything.

New Member

7975 dial random numbers when off hook

I'm not sure if I had to, but I ran a job to reset them all anyway.

New Member

7975 dial random numbers when off hook

I have the same issue, but with the 7961 and 7940s. It started when we moved from 4.x to 8.x this year. It randomly happens, being the 7961s the most affected ones. I replaced them with 7962s and just last week one of the 7962s had the same issue. I will try Ian's solution, people gets frustrated when this happens and blame it on the system and the person in charge.

New Member

7975 dial random numbers when off hook

Setting the services provisioning is the suggested workaround, but, depending on what you're doing and the types of phones you have in the cluster, this may be not suitable for your environment without programming changes. For us, with various custom directories, it was not the way we wanted to go.

One of the latest 9-3-1 ES Firmwares, available from TAC, seems to fix this issue. We did not see the "call won't terminate without pressing 'End Call' softkey" appear either, thankfully. If you can get that firmware then you can get past this one.

New Member

7975 dial random numbers when off hook

Any Updates on this issue

Experiencing the same issue on CUCM 9.1 cluster on 7941 and 7945 phones.

Tried the latest firmware 9-3-1SR2-1S and 9-3-1-1S which is supposed to have the fix.

Is there any firmware available which resolves the issue???

New Member

7975 dial random numbers when off hook

If you open a case with TAC they will provide you with an engineered firmware version SCCP42.9-3-1ES11S, but this firmware only applies to 7942/7962 and 7945/7965. They are still working on a solution for the 7940, 7941 and 7961 since 80% of my footprint are those devices.

I've applied the suggested firmware but since it is a random issue I do not have a specific timeline to verify that it or it did not work.

My next step was going to upgrade to CUCM 9.1, but based on your post the issue does not go away with CUCM 9.1.

New Member

7975 dial random numbers when off hook

We have it stable on 9.2.3S for 7941 phones. The issue started when we upgraded the firmwares to 9.3.1 when the cluster was on CUCM Version 6.1.5. We downgraded it to 9.2.3s and the issue never happened.

When the CUCM ver was upgraded to 9.1 with firmwares 9.3.1SR2 the issue happened again for both 7941 and 7945 phones. We downgraded the firmwares of 7941 to 9.2.3s and 7945's to 9.3.1 since both these versions were stable in CUCM 6.1.5. 7941's looks fine so far. But 7945's has the issue. So looking for a stable version on 7945's

This customer is not someone we can do R&D on. So will wait for a stable major version

New Member

7975 dial random numbers when off hook

We have been running ES7 on our 79X1 series devices and have found that the autodial bug is gone, and, fortunately, haven't run into any new bugs. Though, we don't run many features, services or otherwise, with the phones. I thought it was implied that the ESes are cumulative, but, it may not be the case.


We were not able to receive a date on the major firmware release, and await that as well, but, with the ES working, will probably not install immediately. Nobody likes being cut by the razor's edge, so we'll hang back a bit on this one without a compelling reason, though I believe the patch for the priv. escalation bug is not in ES7.

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