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8 posts

Wannabe Geek

#93233 16-Nov-2011 21:33
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During testing of a product recently, I was sending SMS's with custom SenderIDs through a New Zealand based SMS provider via API.  However these custom SenderIDs were not showing up on Telecom phones.   I require custom SenderID's as the product relies on the reply going back to the originating number - and each customers has their own number.

The local provider replied
"Recently (approx 3~4 months ago), Telecom started filtering the Sender IDs on messages arriving on their network.

They culled this down to specific Sender IDs only (authorised senders and those using Short Codes).
This means we are now unable to provide the Sender ID option for TXTs sent to the Telecom network, as these TXTs must now originate from our premium route connections to Telecom.

Any TXTs sent to the Telecom network will originate from one of our pooled numbers (the 021 and 022 numbers you saw).


This is unavoidable, as any custom Sender ID will fail to deliver to a Telecom handset.

Does anybody know of Telecom partner where I am able to set the SenderIDs for each message (using a API?).

I guess this is the risk of building a product that relies on the infrastructure of others. One change and a years work down the drain :-)

Sorry if this has been discussed before, spent several hours looking but found nothing. 

Thanks for any feedback


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6462 posts

Uber Geek

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  #546231 16-Nov-2011 22:42
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This also happens if you send SMS through Clickatell, an overseas provider.

For the record, it works fine on Vodafone. 

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8 posts

Wannabe Geek

  #546237 16-Nov-2011 22:57
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Hi there,

yes I was originally using Clickatell, but the messages wern't getting delivered to Telecom numbers so I switched to a local provider  (Clickatell also works fine for Vodafone and 2degrees). This solved all the issues until Telecom started filtering SenderIDs.  Its hard keeping up with the changing games!

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Uber Geek

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Biddle Corp
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  #546262 17-Nov-2011 06:01
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My understanding is Telecom's SMSC's no longer allow this to stop spammers.

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Uber Geek


  #546413 17-Nov-2011 11:44
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Sadly if SMS had a From and a ReplyTo number/address kind of like email it wouldn't be a problem.

Anyway, I think we had a previous thread about this might see if I can find it.

Edit: here is the previous statement on this:

Telecom has a list of approved service providers (ASP’s) to provide for premium or enhanced SMS and bulk SMS services.  We also have specific arrangements and contracts with organisations such as Twitter, Facebook and Bebo to terminate SMS messages on our network as well as competitors to exchange SMS traffic.  
All other traffic coming into the Telecom Network is by design and contractual agreement, for person to person traffic only.  One of the key criteria we have on these person to person routes is that we expect the SMS’s coming in to have the sender’s identity of the country they are coming from.  
Working with parameters and approved trusted sources ensures we can manage unsolicited SMS traffic reaching our customers.  Our product teams will review, assess and manage this on an ongoing basis to ensure genuine person to person traffic is not adversely impacted by the parameters set.  

You can try contacting Telecom about their M-Channel service


8 posts

Wannabe Geek

  #547045 18-Nov-2011 19:06
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Thanks for your feedback guys.

Does anyone know the list of "Telecom approved service providers"?  

Ill give them an email about it too and post back here if they reply.

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