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Retrieve inital configuration for Cisco phone 7942 from Asterisk TFTP server

Posted on 2011-03-15
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Last Modified: 2013-11-12
We have problem for those Cisco phone 7942 to retrieve the configuration from the Centos TFTP server which Asterisk is running on it. Do you have any idea how to debug and fix the problem ?

Thanks
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Question by:AXISHK
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17 Comments
 
LVL 35

Expert Comment

by:Ernie Beek
ID: 35136201
You are using DHCP option 150 to define the tftp server?
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Author Comment

by:AXISHK
ID: 35136380
Yes.
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LVL 35

Accepted Solution

by:
Ernie Beek earned 2000 total points
ID: 35136390
Ok,

Any firewall running on the server which might block it?
Anything showing in the tftp log?
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Author Comment

by:AXISHK
ID: 35136436
How to see the log in Centos TFTP ?

Tks
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Author Comment

by:AXISHK
ID: 35136442
What firewall setting do I need to check in Centos , Tks
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LVL 35

Expert Comment

by:Ernie Beek
ID: 35136463
For logging try:
cd /var/log
grep tftp messages


For iptables, just stop it and see if you get through first: /etc/init.d/iptables stop
0
 

Author Comment

by:AXISHK
ID: 35137851
Seem like it is not related to filewall, the centos could download  a configuration file to Cisco phone, but not sure why it keep asking tftp for the file.

My Cisco phone is 7942. Any idea ?

Mar 15 21:26:17 ippbx in.tftpd[15666]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:26:17 ippbx in.tftpd[15667]: RRQ from 192.168.1.193 filename SEP108CCF74A9C8.cnf.xml
Mar 15 21:26:41 ippbx in.tftpd[15670]: RRQ from 192.168.1.190 filename CTLSEP108CCF75C9A8.tlv
Mar 15 21:26:41 ippbx in.tftpd[15670]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:26:41 ippbx in.tftpd[15671]: RRQ from 192.168.1.190 filename ITLSEP108CCF75C9A8.tlv
Mar 15 21:26:41 ippbx in.tftpd[15671]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:26:41 ippbx in.tftpd[15672]: RRQ from 192.168.1.190 filename ITLFile.tlv
Mar 15 21:26:41 ippbx in.tftpd[15672]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:26:41 ippbx in.tftpd[15673]: RRQ from 192.168.1.190 filename SEP108CCF75C9A8.cnf.xml
Mar 15 21:26:48 ippbx in.tftpd[15674]: RRQ from 192.168.1.193 filename CTLSEP108CCF74A9C8.tlv
Mar 15 21:26:48 ippbx in.tftpd[15674]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:26:48 ippbx in.tftpd[15675]: RRQ from 192.168.1.193 filename ITLSEP108CCF74A9C8.tlv
Mar 15 21:26:48 ippbx in.tftpd[15675]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:26:48 ippbx in.tftpd[15676]: RRQ from 192.168.1.193 filename ITLFile.tlv
Mar 15 21:26:48 ippbx in.tftpd[15676]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:26:48 ippbx in.tftpd[15677]: RRQ from 192.168.1.193 filename SEP108CCF74A9C8.cnf.xml
Mar 15 21:27:12 ippbx in.tftpd[15678]: RRQ from 192.168.1.190 filename CTLSEP108CCF75C9A8.tlv
Mar 15 21:27:12 ippbx in.tftpd[15678]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:27:13 ippbx in.tftpd[15679]: RRQ from 192.168.1.190 filename ITLSEP108CCF75C9A8.tlv
Mar 15 21:27:13 ippbx in.tftpd[15679]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:27:13 ippbx in.tftpd[15680]: RRQ from 192.168.1.190 filename ITLFile.tlv
Mar 15 21:27:13 ippbx in.tftpd[15680]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:27:13 ippbx in.tftpd[15681]: RRQ from 192.168.1.190 filename SEP108CCF75C9A8.cnf.xml
Mar 15 21:27:19 ippbx in.tftpd[15682]: RRQ from 192.168.1.193 filename CTLSEP108CCF74A9C8.tlv
Mar 15 21:27:19 ippbx in.tftpd[15682]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:27:19 ippbx in.tftpd[15683]: RRQ from 192.168.1.193 filename ITLSEP108CCF74A9C8.tlv
Mar 15 21:27:19 ippbx in.tftpd[15683]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:27:19 ippbx in.tftpd[15684]: RRQ from 192.168.1.193 filename ITLFile.tlv
Mar 15 21:27:19 ippbx in.tftpd[15684]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:27:19 ippbx in.tftpd[15685]: RRQ from 192.168.1.193 filename SEP108CCF74A9C8.cnf.xml
Mar 15 21:27:44 ippbx in.tftpd[15688]: RRQ from 192.168.1.190 filename CTLSEP108CCF75C9A8.tlv
Mar 15 21:27:44 ippbx in.tftpd[15688]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:27:44 ippbx in.tftpd[15689]: RRQ from 192.168.1.190 filename ITLSEP108CCF75C9A8.tlv
Mar 15 21:27:44 ippbx in.tftpd[15689]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:27:44 ippbx in.tftpd[15690]: RRQ from 192.168.1.190 filename ITLFile.tlv
Mar 15 21:27:44 ippbx in.tftpd[15690]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:27:44 ippbx in.tftpd[15691]: RRQ from 192.168.1.190 filename SEP108CCF75C9A8.cnf.xml
Mar 15 21:27:50 ippbx in.tftpd[15692]: RRQ from 192.168.1.193 filename CTLSEP108CCF74A9C8.tlv
Mar 15 21:27:50 ippbx in.tftpd[15692]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:27:50 ippbx in.tftpd[15693]: RRQ from 192.168.1.193 filename ITLSEP108CCF74A9C8.tlv
Mar 15 21:27:50 ippbx in.tftpd[15693]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:27:50 ippbx in.tftpd[15694]: RRQ from 192.168.1.193 filename ITLFile.tlv
Mar 15 21:27:50 ippbx in.tftpd[15694]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:27:50 ippbx in.tftpd[15695]: RRQ from 192.168.1.193 filename SEP108CCF74A9C8.cnf.xml
Mar 15 21:28:15 ippbx in.tftpd[15698]: RRQ from 192.168.1.190 filename CTLSEP108CCF75C9A8.tlv
Mar 15 21:28:15 ippbx in.tftpd[15698]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:28:15 ippbx in.tftpd[15699]: RRQ from 192.168.1.190 filename ITLSEP108CCF75C9A8.tlv
Mar 15 21:28:15 ippbx in.tftpd[15699]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:28:15 ippbx in.tftpd[15700]: RRQ from 192.168.1.190 filename ITLFile.tlv
Mar 15 21:28:15 ippbx in.tftpd[15700]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:28:16 ippbx in.tftpd[15701]: RRQ from 192.168.1.190 filename SEP108CCF75C9A8.cnf.xml
Mar 15 21:28:21 ippbx in.tftpd[15702]: RRQ from 192.168.1.193 filename CTLSEP108CCF74A9C8.tlv
Mar 15 21:28:21 ippbx in.tftpd[15702]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:28:21 ippbx in.tftpd[15703]: RRQ from 192.168.1.193 filename ITLSEP108CCF74A9C8.tlv
Mar 15 21:28:21 ippbx in.tftpd[15703]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:28:21 ippbx in.tftpd[15704]: RRQ from 192.168.1.193 filename ITLFile.tlv
Mar 15 21:28:21 ippbx in.tftpd[15704]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:28:21 ippbx in.tftpd[15705]: RRQ from 192.168.1.193 filename SEP108CCF74A9C8.cnf.xml
Mar 15 21:28:47 ippbx in.tftpd[15706]: RRQ from 192.168.1.190 filename CTLSEP108CCF75C9A8.tlv
Mar 15 21:28:47 ippbx in.tftpd[15706]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:28:47 ippbx in.tftpd[15707]: RRQ from 192.168.1.190 filename ITLSEP108CCF75C9A8.tlv
Mar 15 21:28:47 ippbx in.tftpd[15707]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:28:47 ippbx in.tftpd[15708]: RRQ from 192.168.1.190 filename ITLFile.tlv
Mar 15 21:28:47 ippbx in.tftpd[15708]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:28:47 ippbx in.tftpd[15709]: RRQ from 192.168.1.190 filename SEP108CCF75C9A8.cnf.xml
Mar 15 21:28:52 ippbx in.tftpd[15717]: RRQ from 192.168.1.193 filename CTLSEP108CCF74A9C8.tlv
Mar 15 21:28:52 ippbx in.tftpd[15717]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:28:52 ippbx in.tftpd[15718]: RRQ from 192.168.1.193 filename ITLSEP108CCF74A9C8.tlv
Mar 15 21:28:52 ippbx in.tftpd[15718]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:28:52 ippbx in.tftpd[15719]: RRQ from 192.168.1.193 filename ITLFile.tlv
Mar 15 21:28:52 ippbx in.tftpd[15719]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:28:52 ippbx in.tftpd[15720]: RRQ from 192.168.1.193 filename SEP108CCF74A9C8.cnf.xml
Mar 15 21:29:18 ippbx in.tftpd[15721]: RRQ from 192.168.1.190 filename CTLSEP108CCF75C9A8.tlv
Mar 15 21:29:18 ippbx in.tftpd[15721]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:29:18 ippbx in.tftpd[15722]: RRQ from 192.168.1.190 filename ITLSEP108CCF75C9A8.tlv
Mar 15 21:29:18 ippbx in.tftpd[15722]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:29:18 ippbx in.tftpd[15723]: RRQ from 192.168.1.190 filename ITLFile.tlv
Mar 15 21:29:18 ippbx in.tftpd[15723]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:29:19 ippbx in.tftpd[15724]: RRQ from 192.168.1.190 filename SEP108CCF75C9A8.cnf.xml
Mar 15 21:29:23 ippbx in.tftpd[15725]: RRQ from 192.168.1.193 filename CTLSEP108CCF74A9C8.tlv
Mar 15 21:29:23 ippbx in.tftpd[15725]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:29:23 ippbx in.tftpd[15726]: RRQ from 192.168.1.193 filename ITLSEP108CCF74A9C8.tlv
Mar 15 21:29:23 ippbx in.tftpd[15726]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:29:23 ippbx in.tftpd[15727]: RRQ from 192.168.1.193 filename ITLFile.tlv
Mar 15 21:29:23 ippbx in.tftpd[15727]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:29:23 ippbx in.tftpd[15728]: RRQ from 192.168.1.193 filename SEP108CCF74A9C8.cnf.xml
Mar 15 21:29:50 ippbx in.tftpd[15732]: RRQ from 192.168.1.190 filename CTLSEP108CCF75C9A8.tlv
Mar 15 21:29:50 ippbx in.tftpd[15732]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:29:50 ippbx in.tftpd[15733]: RRQ from 192.168.1.190 filename ITLSEP108CCF75C9A8.tlv
Mar 15 21:29:50 ippbx in.tftpd[15733]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:29:50 ippbx in.tftpd[15734]: RRQ from 192.168.1.190 filename ITLFile.tlv
Mar 15 21:29:50 ippbx in.tftpd[15734]: sending NAK (1, File not found) to 192.168.1.190
Mar 15 21:29:50 ippbx in.tftpd[15735]: RRQ from 192.168.1.190 filename SEP108CCF75C9A8.cnf.xml
Mar 15 21:29:54 ippbx in.tftpd[15736]: RRQ from 192.168.1.193 filename CTLSEP108CCF74A9C8.tlv
Mar 15 21:29:54 ippbx in.tftpd[15736]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:29:54 ippbx in.tftpd[15737]: RRQ from 192.168.1.193 filename ITLSEP108CCF74A9C8.tlv
Mar 15 21:29:54 ippbx in.tftpd[15737]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:29:54 ippbx in.tftpd[15738]: RRQ from 192.168.1.193 filename ITLFile.tlv
Mar 15 21:29:54 ippbx in.tftpd[15738]: sending NAK (1, File not found) to 192.168.1.193
Mar 15 21:29:55 ippbx in.tftpd[15739]: RRQ from 192.168.1.193 filename SEP108CCF74A9C8.cnf.xml
0
 
LVL 35

Expert Comment

by:Ernie Beek
ID: 35139601
Well that could mean there is something wrong with the config file......
0
 

Author Comment

by:AXISHK
ID: 35143539
Any idea what configuration file , image should be placed on the tftp ? Any templates that I could download for testing ?

Thanks
0
 
LVL 35

Expert Comment

by:Ernie Beek
ID: 35145776
0
 

Author Comment

by:AXISHK
ID: 35145967
Already watched that but doesn't help.
It come out with "Error Verifying Config Info". Believe there is something wrong on the configuration file.

Is there any workable template for Cisco 7942 that I could start with ?

Thanks
0
 
LVL 35

Expert Comment

by:Ernie Beek
ID: 35146489
Give this a try:

 
<device>  
<Default>   
<callManagerGroup>   
<members>   
<member priority="0">   
<callManager>   
<ports>   
<ethernetPhonePort>2000</ethernetPhonePort>   
<sipPort>5060</sipPort>  
<securedSipPort>5061</securedSipPort>  
</ports>   
<processNodeName>!!!!! SIP SERVER !!!!!</processNodeName>   
</callManager>   
</member>   
</members>   
</callManagerGroup>  
<loadInformation434 model="Cisco 7942"></loadInformation434>  
</Default>   
<deviceProtocol>SIP</deviceProtocol>  
<sshUserId>admin</sshUserId>  
<sshPassword>admin</sshPassword>  
<devicePool>  
<dateTimeSetting>  
<dateTemplate>D/M/Y</dateTemplate> ; by adding a after the Y shows time in 12 hour mode i.e. D/M/Ya  
<timeZone>!!!!! TIME ZONE !!!!!</timeZone>  
<ntps>   
<ntp>   
<name>!!!!! NTP SERVER !!!!!</name>   
<ntpMode>Unicast</ntpMode>   
</ntp>   
</ntps>   
</dateTimeSetting>  
<callManagerGroup>  
<members>  
<member priority="0">  
<callManager>  
<ports>  
<ethernetPhonePort>2000</ethernetPhonePort>  
<sipPort>5060</sipPort>  
<securedSipPort>5061</securedSipPort>  
</ports>  
<processNodeName>!!!!! SIP SERVER !!!!!</processNodeName>  
</callManager>  
</member>  
</members>  
</callManagerGroup>  
</devicePool>  
<sipProfile>  
<sipProxies>  
<backupProxy></backupProxy>   
<backupProxyPort></backupProxyPort>   
<emergencyProxy></emergencyProxy>   
<emergencyProxyPort></emergencyProxyPort>   
<outboundProxy></outboundProxy>   
<outboundProxyPort></outboundProxyPort>   
<registerWithProxy>true</registerWithProxy>   
</sipProxies>  
<enableVad>false</enableVad>  
<preferredCodec>g729a</preferredCodec>  
<natEnabled>!!!!! TRUE/FALSE !!!!!</natEnabled>   
<natAddress></natAddress>   
<phoneLabel>!!!!! LINE LABEL !!!!!</phoneLabel>  
<sipLines>  
&bull;   
<featureID></featureID>  
<featureLabel></featureLabel>  
<proxy>!!!!! SIP SERVER !!!!!</proxy>  
<port>5060</port>  
<name>09518096</name>  
<displayName>V-Spec</displayName>  
<autoAnswer>  
<autoAnswerEnabled>2</autoAnswerEnabled>  
</autoAnswer>  
<callWaiting>3</callWaiting>  
<authName>!!!!! USERNAME !!!!!</authName>  
<authPassword>!!!!! PASSWORD !!!!!</authPassword>  
<sharedLine>false</sharedLine>  
<messageWaitingLampPolicy>3</messageWaitingLampPolicy>  
<messagesNumber>!!!!! SIP PHONE NUMBER!!!!!</messagesNumber>  
<ringSettingIdle>4</ringSettingIdle>  
<ringSettingActive>5</ringSettingActive>  
<contact>!!!!! SIP PHONE NUMBER !!!!!</contact>  
<forwardCallInfoDisplay>  
<callerName>true</callerName>  
<callerNumber>false</callerNumber>  
<redirectedNumber>false</redirectedNumber>  
<dialedNumber>true</dialedNumber>  
</forwardCallInfoDisplay>  
</line>  
</sipLines>  
<voipControlPort>5060</voipControlPort>   
<dscpForAudio>184</dscpForAudio>   
<ringSettingBusyStationPolicy>0</ringSettingBusyStationPolicy>   
</sipProfile>  
<loadInformation>SIP42.8-5-2S</loadInformation>  
<directoryURL></directoryURL>  
<messagesURL>!!!!! SIP SERVER !!!!!</messagesURL>  
<servicesURL></servicesURL>  
<networkLocale>!!!!! LOCALE !!!!!</networkLocale>   
<networkLocaleInfo>   
<name>!!!!! LOCALE !!!!!</name>   
</networkLocaleInfo>   
</device>

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Take in to account though that the phones are very picky. One wrong character and they start to protest. Oh, it's also case sensitive.
0
 

Author Comment

by:AXISHK
ID: 35146806
Doesn't work.

Do I need to reload the image file to the phone first. Do I need to change it to SIP phone as I have saw some article that is is not come with SIP bey default ? What other files should there be beside the SEP<MAC>.xml.cnf ?
0
 
LVL 35

Expert Comment

by:Ernie Beek
ID: 35147272
0
 

Author Comment

by:AXISHK
ID: 35153466
Doesn't help. Actually, the steps is not really up-to-date as some and applicable to Cisoc 7942. eg. OS79xx.txt don't need any more.

Actually, which file should be in place before we load the configuration. Really want to some step by step to check and make sure none is missing before loading the configuration.

Tks
0
 

Author Comment

by:AXISHK
ID: 35153597
FYI, here is the XML configuration that I try to load to the phone.

After reboot the phone, it still return with "Unprovisioned".

When I check the firmware on the phone :
1. Load File  term42.default
2. App Load ID jar42sip.9-0-3TH1-22.sbin
3. JVM Load ID cvm42sip.9-0-3TH1-22.sbin
4. OS Load ID cnu42.9-0-3TH1-22.sbn
5. Boot Load ID tnp42.8-3-1-21a.bin
6. dsp42.9-0-3TH1-22.sbn

So, suppose my firmware SIP42.9-0-3S should be retrevied, correct ? Anything missing...

Thanks

<device> 
<Default>   
<callManagerGroup>   
<members>   
<member priority="0">   
<callManager>   
<ports>   
<ethernetPhonePort>2000</ethernetPhonePort>   
<sipPort>5060</sipPort>  
<securedSipPort>5061</securedSipPort>  
</ports>   
<processNodeName>192.168.1.32</processNodeName>   
</callManager>   
</member>   
</members>   
</callManagerGroup>  
<loadInformation9 model="IP Phone 7942G"></loadInformation9>  
</Default>   
<deviceProtocol>SIP</deviceProtocol>  
<sshUserId>admin</sshUserId>  
<sshPassword>admin</sshPassword>  
<devicePool>  
<dateTimeSetting>  
<dateTemplate>D/M/Y</dateTemplate> 
<timeZone>China Standard/Daylight Time</timeZone>  
<ntps>   
<ntp>   
<name>hk.pool.ntp.org</name>   
<ntpMode>Unicast</ntpMode>   
</ntp>   
</ntps>   
</dateTimeSetting>  
<callManagerGroup>  
<members>  
<member priority="0">  
<callManager>  
<ports>  
<ethernetPhonePort>2000</ethernetPhonePort>  
<sipPort>5060</sipPort>  
<securedSipPort>5061</securedSipPort>  
</ports>  
<processNodeName>192.168.1.32</processNodeName>  
</callManager>  
</member>  
</members>  
</callManagerGroup>  
</devicePool>  
<sipProfile>  
<sipProxies>  
<backupProxy></backupProxy>   
<backupProxyPort></backupProxyPort>   
<emergencyProxy></emergencyProxy>   
<emergencyProxyPort></emergencyProxyPort>   
<outboundProxy></outboundProxy>   
<outboundProxyPort></outboundProxyPort>   
<registerWithProxy>true</registerWithProxy>   
</sipProxies>  
<enableVad>false</enableVad>  
<preferredCodec>g729a</preferredCodec>  
<natEnabled>FALSE</natEnabled>   
<natAddress></natAddress>   
<phoneLabel>ABC</phoneLabel>  
<sipLines> 
<featureID></featureID>  
<featureLabel></featureLabel>  
<proxy>192.168.1.32</proxy>  
<port>5060</port>  
<name>09518096</name>  
<displayName>V-Spec</displayName>  
<autoAnswer>  
<autoAnswerEnabled>2</autoAnswerEnabled>  
</autoAnswer>  
<callWaiting>3</callWaiting>  
<authName>2884</authName>  
<authPassword>8888</authPassword>  
<sharedLine>false</sharedLine>  
<messageWaitingLampPolicy>3</messageWaitingLampPolicy>  
<messagesNumber>2884</messagesNumber>  
<ringSettingIdle>4</ringSettingIdle>  
<ringSettingActive>5</ringSettingActive>  
<contact>2884</contact>  
<forwardCallInfoDisplay>  
<callerName>true</callerName>  
<callerNumber>false</callerNumber>  
<redirectedNumber>false</redirectedNumber>  
<dialedNumber>true</dialedNumber>  
</forwardCallInfoDisplay>  
</line>  
</sipLines>  
<voipControlPort>5060</voipControlPort>   
<dscpForAudio>184</dscpForAudio>   
<ringSettingBusyStationPolicy>0</ringSettingBusyStationPolicy>   
</sipProfile>  
<loadInformation>SIP42.9-0-3S</loadInformation>  
<directoryURL></directoryURL>  
<messagesURL>192.168.1.32</messagesURL>  
<servicesURL></servicesURL>  
<networkLocale>United_States</networkLocale>   
<networkLocaleInfo>   
<name>United_States</name>   
</networkLocaleInfo>   
</device>

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Author Closing Comment

by:AXISHK
ID: 35212687
Tks
0

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Why do some people recommend buying business VoIP from an ISP? What are the benefits to my company? What are the costs?
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …
In this video, Percona Solution Engineer Rick Golba discuss how (and why) you implement high availability in a database environment. To discuss how Percona Consulting can help with your design and architecture needs for your database and infrastr…

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