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Unable to hear Audio in Cisco IP Phone

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acharyr123
Level 3
Level 3

‎05-14-2009 04:34 AM - edited ‎03-15-2019 06:01 PM

Hi,

I have CCM 7.0 (System version: 7.0.1.11000-2).

I have terminated PRI in the 2821 voice gateway & the GW is integrated with CCM.

ISDN is working fine...

The problem is: whenever i dial any number (mobile/landline) i can hear other party's voice, but he is unable to hear my voice.

Any help would be greatly appreciated....

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chadlincoln
Level 3
Level 3

‎05-14-2009 04:57 AM

Is the router IP and the IP of your phone on the same subnet? If not, it sounds like the subnet of your phone cannot route to the gateway, either because of a routing problem or access-list problem somewhere.

Please rate if this helped.

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acharyr123
Level 3
Level 3
In response to chadlincoln

‎05-14-2009 05:35 AM

Hi,

They are on different vlan & the inter-vlan routing is perfect. IP Phones can reach to Voice gateway...any other idea..

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chadlincoln
Level 3
Level 3
In response to acharyr123

‎05-14-2009 06:14 AM

Work through this document and see what you find:

http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a008009484b.shtml

Please rate if this helps.

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Adrian Saavedra
Level 7
Level 7

‎05-14-2009 06:37 AM

Hi Partha,

You can download an excellent document created by Nick, might help you.

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Unified%20Communications%20and%20Video&topic=IP%20Telephony&topicID=.ee6c829&fromOutline=&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.2cc2ca6c

Hope it helps, please rate if it does.

Best regards,

- Adrián.

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