Ok, guys... Please be gentle with me. I have what is going to be the strangest question you will have ever heard, but I have no idea what to tell this person. I set up Asterisk 3 or 4 weeks ago, everything is running smooth. My receptionist has told me on two different occasions that she tried to transfer a call by pressing "#", and she heard a buzz noise in the phone and the phone then SHOCKED her in her ear. She wasn't able to do anything with the phone for a few seconds as the buttons didn't respond, then she could go back to picking up calls and whatnot. This is a Cisco 7960, SIP 7.4 on power over ethernet. I don't see how it would be possible for her to get physically shocked by the phone. Has anyone ever heard of this happening on any type of voip hardware? Mark
Yup. I even suspected it was a 7960 before I got that far in your email. It hasn't happened to any of my users, but I heard about it at a Cisco users group meeting, from a number of people representing a different companies. Cisco was present and stumped, I have heard any more about it though. Dan -----Original Message----- From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Mark Johnson Sent: Friday, May 20, 2005 8:09 AM To: asterisk-users@lists.digium.com Subject: [Asterisk-Users] Stange question... Ok, guys... Please be gentle with me. I have what is going to be the strangest question you will have ever heard, but I have no idea what to tell this person. I set up Asterisk 3 or 4 weeks ago, everything is running smooth. My receptionist has told me on two different occasions that she tried to transfer a call by pressing "#", and she heard a buzz noise in the phone and the phone then SHOCKED her in her ear. She wasn't able to do anything with the phone for a few seconds as the buttons didn't respond, then she could go back to picking up calls and whatnot. This is a Cisco 7960, SIP 7.4 on power over ethernet. I don't see how it would be possible for her to get physically shocked by the phone. Has anyone ever heard of this happening on any type of voip hardware? Mark _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
On May 20, 2005, at 8:08 AM, Mark Johnson wrote:> Ok, guys... Please be gentle with me. I have what is going to be the > strangest question you will have ever heard, but I have no idea what > to tell this person. > > I set up Asterisk 3 or 4 weeks ago, everything is running smooth. My > receptionist has told me on two different occasions that she tried to > transfer a call by pressing "#", and she heard a buzz noise in the > phone and the phone then SHOCKED her in her ear. She wasn't able to > do anything with the phone for a few seconds as the buttons didn't > respond, then she could go back to picking up calls and whatnot. > > This is a Cisco 7960, SIP 7.4 on power over ethernet. I don't see how > it would be possible for her to get physically shocked by the phone. > Has anyone ever heard of this happening on any type of voip hardware? > > Mark >What kind of clothing was she wearing? (Static electricity and plastic phones, you know?) Hope she's being nice about it, btw. I've had employees (try to) sue me for less ;-) /rg
I funny one is when our IT manager accidentally supplies the power supply power into one of our voip phones and also feeds it the POE =) Melted outlet, flames in the RJ connector and melted cat5 cable -----Original Message----- From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Dan Austin Sent: Friday, May 20, 2005 12:42 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: RE: [Asterisk-Users] Stange question... Yup. I even suspected it was a 7960 before I got that far in your email. It hasn't happened to any of my users, but I heard about it at a Cisco users group meeting, from a number of people representing a different companies. Cisco was present and stumped, I have heard any more about it though. Dan -----Original Message----- From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Mark Johnson Sent: Friday, May 20, 2005 8:09 AM To: asterisk-users@lists.digium.com Subject: [Asterisk-Users] Stange question... Ok, guys... Please be gentle with me. I have what is going to be the strangest question you will have ever heard, but I have no idea what to tell this person. I set up Asterisk 3 or 4 weeks ago, everything is running smooth. My receptionist has told me on two different occasions that she tried to transfer a call by pressing "#", and she heard a buzz noise in the phone and the phone then SHOCKED her in her ear. She wasn't able to do anything with the phone for a few seconds as the buttons didn't respond, then she could go back to picking up calls and whatnot. This is a Cisco 7960, SIP 7.4 on power over ethernet. I don't see how it would be possible for her to get physically shocked by the phone. Has anyone ever heard of this happening on any type of voip hardware? Mark _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Are you using POE from a 3550? We have had similar problems, upgrading the firmware on the switch has reduced the occurrences. The Cisco phones are not always nice in an environment with a lot of static electricity. -----Original Message----- From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Mark Johnson Sent: Friday, May 20, 2005 9:09 AM To: asterisk-users@lists.digium.com Subject: [Asterisk-Users] Stange question... Ok, guys... Please be gentle with me. I have what is going to be the strangest question you will have ever heard, but I have no idea what to tell this person. I set up Asterisk 3 or 4 weeks ago, everything is running smooth. My receptionist has told me on two different occasions that she tried to transfer a call by pressing "#", and she heard a buzz noise in the phone and the phone then SHOCKED her in her ear. She wasn't able to do anything with the phone for a few seconds as the buttons didn't respond, then she could go back to picking up calls and whatnot. This is a Cisco 7960, SIP 7.4 on power over ethernet. I don't see how it would be possible for her to get physically shocked by the phone. Has anyone ever heard of this happening on any type of voip hardware? Mark _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Mmm i experienced something similar with a grandstream, but i would not say it was a shock, just a strong noise, and i felt my ear like if it were going to explode, but not sure how to avoid it. May be some one here in the list can show us why this happens. On 5/20/05, Mark Johnson <asterisk@astroshapes.com> wrote:> Ok, guys... Please be gentle with me. I have what is going to be the > strangest question you will have ever heard, but I have no idea what to > tell this person. > > I set up Asterisk 3 or 4 weeks ago, everything is running smooth. My > receptionist has told me on two different occasions that she tried to > transfer a call by pressing "#", and she heard a buzz noise in the phone > and the phone then SHOCKED her in her ear. She wasn't able to do > anything with the phone for a few seconds as the buttons didn't respond, > then she could go back to picking up calls and whatnot. > > This is a Cisco 7960, SIP 7.4 on power over ethernet. I don't see how > it would be possible for her to get physically shocked by the phone. > Has anyone ever heard of this happening on any type of voip hardware? > > Mark > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >-- "Su nombre es GNU/Linux, no solamente Linux, mas info en http://www.gnu.org"
Eric Alexander wrote:>Are you using POE from a 3550? We have had similar problems, upgrading the >firmware on the switch has reduced the occurrences. The Cisco phones are not >always nice in an environment with a lot of static electricity. > > >POE is coming from a 3500XL I think. It just weird that this has never happened until I changed from Call Manager to Asterisk. I know this has to be a hardware issue but they are blaiming it on Asterisk...
At 10:08 AM 5/20/2005, you wrote:>Ok, guys... Please be gentle with me. I have what is going to be the >strangest question you will have ever heard, but I have no idea what to >tell this person. > >I set up Asterisk 3 or 4 weeks ago, everything is running smooth. My >receptionist has told me on two different occasions that she tried to >transfer a call by pressing "#", and she heard a buzz noise in the phone >and the phone then SHOCKED her in her ear. She wasn't able to do anything >with the phone for a few seconds as the buttons didn't respond, then she >could go back to picking up calls and whatnot. > >This is a Cisco 7960, SIP 7.4 on power over ethernet. I don't see how it >would be possible for her to get physically shocked by the phone. >Has anyone ever heard of this happening on any type of voip hardware?Is she using a headset or a handset with the phone? Also, what kind of floor or floor matt under her chair? Tom>Mark >_______________________________________________ >Asterisk-Users mailing list >Asterisk-Users@lists.digium.com >http://lists.digium.com/mailman/listinfo/asterisk-users >To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users
It has to do with POE from the switch. We usually purchase power cubes for users that repeatedly have this problem. Another thing we have found is the farther away from the switch (the longer the cat5) the more we see this problem. -----Original Message----- From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Mark Johnson Sent: Friday, May 20, 2005 12:03 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Stange question... Eric Alexander wrote:>Are you using POE from a 3550? We have had similar problems, upgrading >the firmware on the switch has reduced the occurrences. The Cisco >phones are not always nice in an environment with a lot of staticelectricity.> > >POE is coming from a 3500XL I think. It just weird that this has never happened until I changed from Call Manager to Asterisk. I know this has to be a hardware issue but they are blaiming it on Asterisk... _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
+++ Mark Johnson [20/05/05 11:08 -0400]:> Ok, guys... Please be gentle with me. I have what is going to be the > strangest question you will have ever heard, but I have no idea what to > tell this person. > > I set up Asterisk 3 or 4 weeks ago, everything is running smooth. My > receptionist has told me on two different occasions that she tried to > transfer a call by pressing "#", and she heard a buzz noise in the phone > and the phone then SHOCKED her in her ear. She wasn't able to do > anything with the phone for a few seconds as the buttons didn't respond, > then she could go back to picking up calls and whatnot. > > This is a Cisco 7960, SIP 7.4 on power over ethernet. I don't see how > it would be possible for her to get physically shocked by the phone. > Has anyone ever heard of this happening on any type of voip hardware? > > Mark > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-usersstatic ! Get your carpets washed and use static guard on it. -- regards Vikram (http://www.vicramresearch.com)
Vikram Rangnekar wrote:>static ! Get your carpets washed and use static guard on it. > > >Thank you everyone for the replies. After doing some testing, it has been determined that it was the phone that was the cause of the user being shocked. We could relocate the phone, switch to a power brick and we could still get the cracking noises in the 7960. Thanks everyone!! Mark