Panasonic NS700 SIP Busy

[Scott_Cloud]

Hi All,

Hoping someone can help me here. I have an NS700 that has a voiceflex SIP trunk on there. Basically once the SIP initially registers, it seems to work fine, until the SIP trunk register expires (not always but mostly around then) then once it reaches the time shown in voiceflex that the trunk will re-register, the trunk remains registered but inbound calls return busy and you cannot dial out. I have tried it over 2 different broadbands with 2 different draytek routers and both return the same result. I have tried disabling the firewall rules also just in case but again it doesnt effect it.

Any ideas would be greatly appreciated.

 

[Scott_Cloud]

I should also mention that a,reboot will temporarily sort until the next register expire time, or knocking the 16voipgw card Out of service then back INS has the same result.

 

[obtsystems]

What rules do you have on the router. 5060 pointed to the system ip locked to sip provider ip. Open port for 5060 on nat locked to ip of the provider.

What is the re register timer set to,1800 seconds?

If you do a sip trace on the system when it’s not working, what do you see.

 

[Jonah29]

What have you got the reg timer set to?
I think VoiceFlex is 900s.
You have got 5060 open on the Draytek haven’t you?
I’ve not done this on a NS but have one to do. We do have a few NECs SL2100 working ok with VoiceFlex. But one currently on test with precisely this issue. We proved out VoiceFlex SIP by configuring a Yealink T33 to work directly.

 

[Scott_Cloud]

Its a pretty basic setup, theres a leased line and a SOGEA on site and i have ran the panasonic over both with the same result on both. Firewall rules are 5060 locked to voiceflex IP range and then the RTP ports opened. I have also tried to disable the firewall when its not working on the drayteks.

i gave Voiceflex call examples of busy calls and they say they are repeatedly sending invites to the PBX but they are being ignored?

I looked on the error logs last night and managed to see some external IP address errors, i have attached a screenshot. Not sure how i address this though?

 

[Ired]

Have the NAT override settings been made on the PBX?

Upd
Oh, i see - UPnP...
Try to change it to STUN if you don't have a fixed external IP-address. And check again network settings of the PBX.

 

[obtsystems]

Are you using peer sip or register sip trunk

 

[Scott_Cloud]

I was debating whether to try a stun server and see if that improves things. The SIP trunk is a register trunk, I did try changing the trunk to auth over ip instead but the issue persisted. The site is very big so I'm thinking it could be a network loop at this stage.
Next stage is to attend site and check all 6 comms cabinets and every work station to check for loops.

 

[CMUK]

I had similar issues with an Avaya IP Office, it was to do with the Network Topology config on the IPO.

Got it working on a few Panasonics and loads of NEC SL2100/SV9100 however

Is your Media range locked to voiceflex IP?

I have checked old configs I have (no longer doing PBX stuff thankfully so no access to live systems)

The register sending interval should be 900 and the one i'm looking at has the stun server as "stun.voiceflex.com"

If it's a big site it should have decent switches that support STP so loops won't occur!

 

[Scott_Cloud]

I had similar issues with an Avaya IP Office, it was to do with the Network Topology config on the IPO.

Got it working on a few Panasonics and loads of NEC SL2100/SV9100 however

Is your Media range locked to voiceflex IP?

I have checked old configs I have (no longer doing PBX stuff thankfully so no access to live systems)

The register sending interval should be 900 and the one i'm looking at has the stun server as "stun.voiceflex.com"

If it's a big site it should have decent switches that support STP so loops won't occur!

I think rtp ports are just open, not locked down to voiceflex. The system isn't using a stun server at the minute, but it may be the next step. Thanks for taking the time to reply