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Tom Waterman

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Posts posted by Tom Waterman

  4. Horrible static when unmuting.

    in General Setup

    Posted

    This is definitevely a problem with the SRTP MAC decoding which seems to be wrong. The phone actually should never play out anything if the MAC (like a cheksum of the SRTP packet) is not okay. The problem is obviously that the rollover counter increments (happens every 22 minutes @ 20 ms packets), and the phone gets out of sync. I believe in e.g. snom 821 or m9 it should be fine, but the 820 has a relatively old SRTP implementation that obviously need some extra TLV. If you have a 821 around, this is definitely worth a try.

     

    I am not sure I can tell the president of the company sorry you need a new phone. Is there anyway to upgrade this via firmware? I have an 870 on my desk does that suffer from the same issues? thank you for all the help.

     

    Tom

  5. Horrible static when unmuting.

    in General Setup

    Posted

    Ok so here I have a snom 820 running firmware ver snom820-SIP 8.4.22 55096 with PBXnSIP version 2011-4.2.0.3981 (Linux). When someone places a person on mute everything works fine. They can stay on mute forever. However, sometimes when the unmute themselves the phones plays very loud static to everyone. It happens randomly but often. Any thoughts would be greatly appreciated. The owner of the company has one and is now asking if I should find him a different phone. Please help.I have also posted this in the snom phone forum. I am not sure it is a PBX problem but I have had it with different versions of Snom phones.

     

    Regards,

    Tom

  6. Unable to change voicemail greeting

    in Mailbox

    Posted

    This has been an problem for a long time and was a difficult one to reproduce. Post-4025 versions have a fix for this.

    http://pbxnsip.com/protect/beta/win32/pbxctrl-4.3.0.5004.exe should fix this issue.

     

    Note: This is a pbxnsip version, not a snomONE version. If you are using snomONE versions please let us know. Also, as usual, please backup the whole PBX folder (at the OS level) before the upgrade.

     

    I am using a PBXnSIP version. and I see this is a 32 bit Windows version so I can install on the site and provide feedback.

     

    Tom

  7. Unable to change voicemail greeting

    in Mailbox

    Posted

    Ok folks I upgraded this client to 4.2.1.4025 (Win32) last week because they were having issues with the voicemail getting cut off. Now I have a new problem. The user can't change her voicemail greeting. Well let me rephrase that. She can log into her voicemail and record a new greeting and select that greeting. You can log into her web portal and go to the mailbox and play the message and it works fine. However when you call the extension the PBX plays the file from the day before. The only thing that corrects this is a restart of the service. Please help.

     

    Regards,

    Tom

  8. voicemails get cut off

    in Mailbox

    Posted

    I have a customer whose voice mail that is sent to her in email gets cut off. The email time is right. but when you listen to the file the end is missing. One example is 56 second voicemail that has only 37 seconds of audio. The length of the voice mail setting is 5 minutes so I know that is not cutting it off. Anyone have any idea?

     

    Regards,

    Tom

  9. BLock HHTP on Outside interfect

    in Security

    Posted

    Hello All, I have a pbx the has two interfaces. One is connected directly to the internet and the other connects to the local phone VLAN. It is all in its own seperate little network. I want to permit traffic to the inside interface which I have already done. I just want to make sure that no one can HTTP to the outside interface, with out turning on the firewall in the OS. Is there a way ti limit just http access to the outside interface?

     

    thank you!

     

    Tom

  10. BLock HHTP on Outside interfect

    in Security

    Posted

    Hello All, I have a pbx the has two interfaces. One is connected directly to the internet and the other connects to the local phone VLAN. It is all in its own seperate little network. I want to permit traffic to the inside interface which I have already done. I just want to make sure that no one can HTTP to the outside interface, with out turning on the firewall in the OS. Is there a way ti limit just http access to the outside interface?

     

    thank you!

     

    Tom

  13. Use a ringtone on the Snom 370

    in Extension Setup

    Posted

    Don't remove the entries, just leave them empty (so that the PBX will send a empty string).

    Ok help me out here a little bit. Here is the default ringtone.xml Can you please show me what needs to be deleted?

     

    <?xml version="1.0"?>

    <ringtones>

    <tone name="custom1">

    <!-- vendor snom off -->

    <vendor ua="Polycom.*">Custom 1</vendor>

    <vendor ua="Cisco-.*"><Bellcore-dr4></vendor>

    <!-- vendor snom on -->

    <vendor></vendor>

    </tone>

    <tone name="custom2">

    <!-- vendor snom off -->

    <vendor ua="Polycom.*">Custom 2</vendor>

    <vendor ua="Cisco-.*"><Bellcore-dr4></vendor>

    <!-- vendor snom on -->

    <vendor><http://127.0.0.1/Bellcore-dr4></vendor>

    </tone>

    <tone name="custom3">

    <!-- vendor snom off -->

    <vendor ua="Polycom.*">Custom 3</vendor>

    <vendor ua="Cisco-.*"><Bellcore-dr4></vendor>

    <!-- vendor snom on -->

    <vendor><http://127.0.0.1/Bellcore-dr4></vendor>

    </tone>

    <tone name="custom4">

    <!-- vendor snom off -->

    <vendor ua="Polycom.*">Custom 4</vendor>

    <vendor ua="Cisco-.*"><Bellcore-dr4></vendor>

    <!-- vendor snom on -->

    <vendor><http://127.0.0.1/Bellcore-dr4></vendor>

    </tone>

    <tone name="internal" type="internal">

    <!-- vendor snom off -->

    <vendor ua="Polycom.*">Internal</vendor>

    <vendor ua="Cisco-.*"><Bellcore-dr2></vendor>

    <vendor ua="Grandstream HT-.*"></vendor>

    <!-- vendor snom on -->

    <vendor><http://127.0.0.1/Bellcore-dr2></vendor>

    </tone>

    <tone name="external" type="external">

    <!-- vendor snom off -->

    <vendor ua="Polycom.*">External</vendor>

    <vendor ua="Cisco-.*"><Bellcore-dr3></vendor>

    <vendor ua="Grandstream HT-.*"></vendor>

    <!-- vendor snom on -->

    <vendor><http://127.0.0.1/Bellcore-dr3></vendor>

    </tone>

    <tone name="intercom" type="intercom">

    <!-- vendor snom off -->

    <vendor ua="Polycom.*">Auto Answer</vendor>

    <vendor ua="Cisco-.*" type="call-info">auto-answer=0</vendor>

    <vendor ua="optiPoint .*" type="call-info">auto-answer=0</vendor>

    <!-- vendor snom on -->

    <vendor ua="snom.*" type="call-info"><{from-uri}>;answer-after=0</vendor>

    <!-- vendor snom off -->

    <vendor ua="Linksys.*" type="call-info"><{from-uri}>;answer-after=0</vendor>

    <vendor ua="Aastra.*" type="call-info"><{from-uri}>;answer-after=0</vendor>

    <vendor ua="Yealink.*" type="call-info"><{from-uri}>;answer-after=0</vendor>

    <!-- vendor snom on -->

    <vendor type="answer-mode">Auto</vendor>

    </tone>

    </ringtones>

  15. Constant hacking

    in Security

    Posted

    Colin,

     

    Since your fighting an attack the article I wrote on SIP hacking might be of interest to you:

    http://windowspbx.blogspot.com/2010/10/someone-is-attempting-to-hack-into-your.html

    If anyone has anymore items to add to the list of Tips, I'd be glad to hear them.

     

    On a less serious note--the title "constant hacking" evokes edbassmaster character. "the hacker" ;-)

     

    Colin a few months ago we went through a period were we would have 300 or so blacklisted IP addresses a day. The easy way to avoid that it to ALLOW you internal subnet that the phone is on and if you have a SIP provider allow them as well. The blacklist everything else.

     

    Cheers,

    Tom

  18. Use a ringtone on the Snom 370

    in Extension Setup

    Posted

    You can edit the file ringtones.xml through the web interface (admin/web page control/templates) and put there whatever you want.

     

    What if I just want the user to be able to select one of the ringtones on the phone? Should I just delete all the settings in the ringtones.xml file?

  19. Use a ringtone on the Snom 370

    in Extension Setup

    Posted

    All, I have an install using 4.2.0.3958 on Windows. Before when they were running 3.2 they were able to change the ringtones on the phones and it worked. The standard rington is terrible (customer opinion). How can I make it so they can use one of the ringtones on the phone. These are snom 370 running 8.4.18 42574 and are autoprovisioned by the pbx. Any help would be greatly appreciated.

     

    Tom

  21. Upgrade going bad. One user can't dial out.

    in General Setup

    Posted

    Ok everyone, I tried this upgrade a month ago and inbound and outbound calls worked but ext to ext calls were broken. So I had to roll back to a 3.4 version. I upgraded all phones to 8.4.18, they are snom 370s and they have been working for a few weeks. I tried to upgrade to the most recent version from the website and I still have a couple of phone behaving terribly. one is the director of the 911 center. She can receive inbound calls fine. but she can't make any outbound calls. I have attached a pcap file. I am getting wierd errorts like 491 Request Pending and 481 Leg/Tranaction does not exsist. Any help is greatly appreciated.

     

    Tom

    192.168.19.101.zip

  24. Firmware update for phones with no INTERNET

    in General Setup

    Posted

    Possible reasons are: The phone got blacklisted during the provisioning process, you would see this in the access list. Or the number of allowed HTTP threads is exhaused (increase it).

     

    You can see in the PBX that the phone does to connect to port 80 and request the firmware location file (repetition in packet #220), but there is nothing coming back.

     

    The pbx is version 4.3.0.3198. No access-list feature in this version. :-)

  25. Firmware update for phones with no INTERNET

    in General Setup

    Posted

    The better option here is to create a 'tftp' folder (at the same level as 'html') and put the .bin file.

     

    That was the first spot I put it and it is still there. So how does the phone know to get there?

    Even if I could put it there and go to the phone and manually place the link to the upgrade in there and press load would be ok, until I can get them upgraded from version 7x.

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