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Forums › Spark New Zealand › VoIP (WorldxChange VFX) over Telecom XT


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Topic # 62832 15-Jun-2010 20:05
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Just been trying VoIP using WxC VFX service over Telecom XT network. Alas it seems a big fail. A Linksys SPA2102 --> a 3G HSPA router.

Registers ok, but within 5 seconds of making a phone call, the call drops. This setup works perfectly over Vodafone, so puzzled as to why it is a complete failure on XT.

Are Telecom actively killing VoIP?

Tried APNs direct & internet(.telecom.co.nz)




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  Reply # 342081 15-Jun-2010 20:18
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No idea if this will work, but try direct.telecom.co.nz as your APN. The direct APN IIRC isn't firewalled.

nzbnw

Edit: Woops just seen you have tried that, what I get for using a mobile to post!

I know the T's and C's exclude VOIP but I don't know if Telecom are enforcing this clause?







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  Reply # 342083 15-Jun-2010 20:32
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Telecom certainly don't block VoIP and using G.729 VoIP calling does work well over XT.
IMHO the quality is actually better on Vodafone 3G but it does work well on XT.

An immediate call drop suggests a NAT / firewall issue.


 
 
 
 




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  Reply # 342086 15-Jun-2010 20:36
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sbiddle:
An immediate call drop suggests a NAT / firewall issue.


Suspect this could be an issue; just preliminary plug n play test so far.




Chorus has spent $1.4 billion on making their xDSL broadband network faster. If your still stuck on ADSL or VDSL, why not spend from $150 on a master filter install to make sure you are getting the most out of your connection?
I install - Naked DSL, DSL Master Splitters, VoIP, data cabling and general computer support for home and small business.
Rural Broadband RBI installer for Ultimate Broadband and Full Flavour

 

Need help in Auckland, Waikato or BoP? Click my email button, or email me direct: [my user name] at geekzonemail dot com

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  Reply # 342260 16-Jun-2010 11:40
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I would agree here.. I have no problems on XT with G.711 or G.729 (works better of course) and SIP (as long as Im in good coverage).

As for VOIP, it depends what you want to achieve.

Practically speaking, I rarely use VOIP directly (unless Im overseas). Ive got a SPA3102 at home (which was a PAIN to configure NAT on with my adsl modem), and with caller ID enabled I can call it from my mobile (nominated it as my number on My Favourites!) and dial out from there. Speed dialling is enabled on the ATA, and Ive got shortcuts on my iPhone (eg. 04123123123,,,,6#) that waits for an appropriate period of time before dialling the desired speed dial number automatically. I map this to a contact and easy peasy "VOIP" dialling with very good quality.

When I do need to use VOIP over XT I use something like Fring or iSIP.



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  Reply # 343804 21-Jun-2010 15:52
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Had another play today. Put router into DMZ, turn off fire wall etc, but still issues.
However, have found this seems to relate to certain calls only; e.g. 0800 000000, or VFX voicemail - 082210. Issue seems to occur when the call is connected straight away, i.e. with no ringing.

Anyone else who is running VoIP over Telecom, especially VFX; wonder if you could try those numbers.
Cheers




Chorus has spent $1.4 billion on making their xDSL broadband network faster. If your still stuck on ADSL or VDSL, why not spend from $150 on a master filter install to make sure you are getting the most out of your connection?
I install - Naked DSL, DSL Master Splitters, VoIP, data cabling and general computer support for home and small business.
Rural Broadband RBI installer for Ultimate Broadband and Full Flavour

 

Need help in Auckland, Waikato or BoP? Click my email button, or email me direct: [my user name] at geekzonemail dot com

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  Reply # 343830 21-Jun-2010 17:00
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I was running a new Cisco SRP521 with 3G modem over XT for an hour or so on the weekend as my primary internet connection. Had no issues at all with inbound or outbound VoIP calls from my Asterisk box to WxC.

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