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No Dial Tone with IP Phone

No Dial Tone with IP Phone


I'm not a dummy when it come to Avaya but this problem has me stumped!  We have a remote site in Vienna which is WAN linked to London office (8720's).  They have a few 9650 handsets which have no dial tone on them.

The calls work in that they can dial numbers etc but there is simply no dial tone or ringing tone (on internal calls).

From a trace of a call it looks like the phone is using the VOIP resource of another remote site in Hamburg (this has a G700 with a S8300).  Vienna is in network region 2, London in region 1 and Hamburg it region 10.  

The phone is connected to a CLAN in London so why is it not using the Medpro in the same cabinet????  Trace is below any info or suggestions would be welcome.


10:27:59     idle station    810004 cid 0x3be6                                  
10:27:59     active station    810004 cid 0x3bf2                                
10:27:59     G729A ss:off ps:20                                                 
             rgn:2 []:2074                        PHONE                    
             rgn:10 []:2060                      (Hamburg)                    
10:28:01     idle station    810004 cid 0x3bf2                                  
10:28:02     active station    810004 cid 0x3bf3                                
10:28:02     G729A ss:off ps:20                                                 
             rgn:2 []:2074                        PHONE                        
             rgn:10 []:2056                      (Hamburg)                    
10:28:05     dial 90043 route:ARS                                               
10:28:05     term trunk-group 1    cid 0x3bf3                                   
             VOIP data from: []:2056                                 
10:28:12     Jitter:0 0 0 0 0 0 0 0 0 0: Buff:8 WC:0 Avg:0                      
10:28:13     Pkloss:* * * * * * * * * *: Oofo:0 WC:0 Avg:0                      
             VOIP data from: []:2056                                 
10:28:23     Jitter:0 0 0 0 0 0 0 0 0 0: Buff:8 WC:0 Avg:0                      
10:28:23     Pkloss:* * * * * * * * * *: Oofo:0 WC:0 Avg:0     

RE: No Dial Tone with IP Phone

Check your IP-Network-Map ("change IP-Network-Map"), make sure the IP range for that location is "mapped" to the proper IP-Network-Region for that location.

Check the media gateway ("change media x"), make sure it is also set to the correct IP-Network-Region for that location.

Also check your UDP port range, and make sure that you have UDP ports being routed between all of the LAN/WAN segments, no audio is typically UDP packerts not being routed properly.



AVAYA Certified Expert

RE: No Dial Tone with IP Phone

Thanks, all this looks to be programmed ok.

The only other thing I can see is that the Hamburg gateway is registering with a Clan in London that is in the London network region (1) rather than Hamburg's nrtwork region of 10. (I guess the MGC list is wrong)

Could this cause a problem?


RE: No Dial Tone with IP Phone

Yes, I would correct the MGC list to register to the main switch's CLANs or PE.  Make sure you can "ping" them before you change it, it may have been done that way because of a lack of direct IP connectivity.

How it acts would be determined how you have the intervening IP Network Regions definied, since it is now registered to another IP Network Region, rather than the main site/location.



AVAYA Certified Expert

RE: No Dial Tone with IP Phone

I am having the same issue with a 9620 and a 9640 that are on a LAN (same switch) with other 96xx phones that work fine.  All are on firmware 3.

RE: No Dial Tone with IP Phone

Bit of an update.  If I remove the path to network region 10(hamburg) for the Vienna network region (2) the phones use the London Medpro and get dial tone etc...

I need to keep the Hamburg path in so internal calls can root to Hamburg and am investigating a prossible firewall issue @ Hamburg...  

RE: No Dial Tone with IP Phone

I have now found that Vienna are blocking the routes to the VOIP IP address in Hamburg but they want the phones to use the resource at London.

Is there anyway to specific which medros to use for a particular network region or any suggestions what bit of programming is telling the phones to use Hamburg?

RE: No Dial Tone with IP Phone

see above: "IP-Network-Map" and "IP-Network-Region" forms.



AVAYA Certified Expert

RE: No Dial Tone with IP Phone


On the locations page the location parameter for Vienna was set to 13 (the same as the German sites) as Vienna does not have its own location code.  

Because of this the system was using the VOIP resources in Germany as it best matched the country's ringing pattern etc.  This has now been changed to 10 (UK) and is now using a Medpro in London - only small issue which they have to live with is that the Vienna phones now have a UK dialling tone and ringing pattern but that's tough!

RE: No Dial Tone with IP Phone

Just curious what Location Vienna is using in it's NR form? If it's using Londons, keep in mind the Timezone Offset. Vienna is (1) hour ahead of London. If it has it's own Location and all is defined then disregard my post.



We are what we repeatedly do. Excellence, then, is not an act but a habit. ARISTOTLE 384-322 B.C.

RE: No Dial Tone with IP Phone

I always make each site have it's own IP-Network-Region, and use it's own "location".  This is the best way to go, as you have the most flexability.



AVAYA Certified Expert

RE: No Dial Tone with IP Phone


Vienna does have its own network region defined which is different to both London and the Hamburg site.

RE: No Dial Tone with IP Phone

Yes, but you don't have a "location" definied, you need both.


AVAYA Certified Expert

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