No voice on incoming calls.

[jst1960]

I have had incoming call issues the last two Saturdays. Last week the issue was that incoming calls were going straight to voicemail. After rebooting the Grandstream HT502 the issue was gone. Today I'm having an issue of incoming calls not having any audio. I did a test call from my mobile phone, my wife picked up and I could not hear anything from her, but she could hear me. I'm sure if I reboot it will resolve the issue for a few days, but I need a fix for this. I don't need my wife jumping me about phone issues every week!
I will be making a support call Monday after work, but if anyone has any ideas about what may be going on, I would appreciate any feedback on this issue.

One other thing, I notice that phone 1 and phone 2 are blinking on the ATA, is this normal?

Here is my setup:

Static IP setup: HT502
Selected Statically Configured As
Assigned IP address of: 192.168.1.151
Subnet Mask: 255.255.255.0
Default Router: 192.168.1.1 (Linksys wrt54gl)
DNS Server 1: 156.154.70.1 (default from VOIPo)
DNS Server 2: 156.154.71.1 (default from VOIPo)

Ports 5004-65000 (UDP) were forwarded to 192.168.1.151 in Linksys WRT54GL router

Thanks,
Steve

[SomeWhoCallMeTim]

Just started having this issue in the last couple of days, i.e. incoming calls can't hear me although I can hear the caller just fine.

Outgoing calls work just fine.

Rebooting the Grandstream didn't help.

I've opened a support ticket.

[Nle]

Just started having this issue in the last couple of days, i.e. incoming calls can't hear me although I can hear the caller just fine.

Outgoing calls work just fine.

Rebooting the Grandstream didn't help.

I've opened a support ticket.

Exact same problem. Incoming calls don't work (other party cannot hear me).
Setup: Cable Modem -> Router (forwarding enabled) -> Grand Stream 502

My settings do NOT block any type of call

[awr66]

I just opened a ticket too.

My set up is: Cable Modem>>>>Grandstream>>>Router

I do not have any unknown callers blocked, but I do have the telemarketer block enabled.

Will wait to see what support can tell me.

[gls101]

Likewise.

Intermittent no received audio on inbound calls, just dead air.

Just opened a ticket.

Gary

[DDebedel]

Hi,

Is there any word from Voipo on this? I am having similar problems with incoming audio.

Grandstream router is directly behind the cable modem.

David D.

[holmes4]

Tim, is the Grandstream inside your router's LAN or outside of it? If inside, have you set up port forwarding? I find I get exactly that symptom if I have not done port forwarding correctly (my adapter simply does not work when I put it outside my router.)

[SomeWhoCallMeTim]

Comcast Modem then Grandstream then router, so I haven't needed to open any ports. Note that I've only had this trouble in the last couple of days...the service has worked fine otherwise.

[rcc344]

Incoming does not work. Either the call goes directly to voicemail, or rings and I get dial tone when answered and the caller continues to hear side tone ring until voice mail answers. This started Friday evening. Rebooted modem and HT. Opened ticket, but don't know if support is available over the holiday weekend.

5/28/2011 - Now working. Incoming and outgoing call are just fine. Didn't do anything. Just started to work. Blame it on Comcast?

[SomeWhoCallMeTim]

In my case I got an email from tech support that I had set "block unknown callers" which blocks anyone not on the whitelist. Not sure how that disabled the answering machine message or blocked us from hearing the callers, but in any case their remote tweaking fixed things and we can now be heard and callers get our answering machine message. Thanks tech support for responding on a Saturday night on a holiday weekend!