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Could be a routing issue, typically results in one way problems. Can you compare to the old device
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I have seen this before and it turned out to be a routing issue - check your routing to make sure subnet is accessible
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that is what I have seen as well, not just the subnet but make sure you can connect to the sip endpoint IP from the provider. &nbsp;I dealt with this just the other day at a site after cutting over to a new vpn connection
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Thanks for the advice, still no luck. All route is OK.
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We are escalating issue to checkpoint .. have chk and try all possible setting
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We have tested it with various location and it resolve the one way audio issue
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<div class="content wysiwyg-content">
Hi all, <br />
<br />
I have an issue after changing our firewall from juniper to checkpoint firewall.<br />
<br />
When I make a call to an internal extension , the recipient can hear my voice clearly but I can't hear their voices.<br />
<br />
I have checked with avaya, they says we need to set no inspect for h323 and h225<br />
<br />
But we can't find anything like that in checkpoint. Any advice will be much appreciated.<br />
<br />
Thank you
</div>
</div>


Hi all, 

I have an issue after changing our firewall from juniper to checkpoint firewall.

When I make a call to an internal extension , the recipient can hear my voice clearly but I can't hear their voices.

I have checked with avaya, they says we need to set no inspect for h323 and h225

But we can't find anything like that in checkpoint. Any advice will be much appreciated.

Thank you

One way audio for avaya after changing to checkpoint firewall

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).

Voice Over IP

Components are those devices that are internal to a computer -- the PC boards, the central processor (CPU), the memory (RAM), disk and video controllers and so on.