Howto:Tele2 (Austria) SIP Provider Compatibility Test

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Innovaphone Compatibility Test Report



SIP Provider: Tele2(Austria)

  • Features:
    • Direct Dial In
    • Fax over T.38
    • DTMF
  • Supported Codecs by the provider
    • G711
    • G729
    • T.38

SIP Provider: Tele2 (Austria)

The provider supports all required innovaphone features and is therefore qualified as recommended SIP Provider.

Tele2(Austria) is only available in Austria. They use a complete different backbone infrastructure then Tele2(Sweden)

That beeing said, Tele2 (Austria) has achieved 96% of all possible test points. For more information on the test rating, please refer to Test Description

Current test state

The tests for this product have been completed.

Testing of this product has been finalized July 7th, 2008.

Testing Enviroment

Scenario NAT


This scenario describes a setup where the PBX and phones are in a private network. The IP800 must use a stun server, in order to send correct SIP - messages. The IP800 works as media relay, all RTP - streams go through the PBX.

Test Results

For more information on the test procedure, please read the following wiki article: SIP Interop Test Description. Bold lines in the test results indicate a KO-criteria.

Basic Call

Tested feature Result
call using g711a Yes
call using g711u Yes
call using g723 Yes
call using g729 Yes
Overlapped sending No
early media channel Yes
Fax using T.38 Yes
Long time call possible(>30 min) Yes
CGPN can be supressed Yes (only extension can be surpressed)
Reverse Media Negotiaton Yes
Voice Quality OK? Yes

Direct Dial In

Tested feature Result
Inbound(Provider -> Innovaphone) Yes
Outbound(Innovaphone -> Provider) Yes


Tested feature Result
DTMF tones sent correctly Yes
DTMF tones received correctly Yes


Tested feature Result
Call can be put on hold Yes
Held end hears music on hold / announcement from PBX Yes
Held end hears music on hold / announcement from provider No

Transfer with consultation

Tested feature Result
Call can be transfered Yes
Held end hears music on hold Yes
Call returns to transferring device if the third

Endpoint is not available


Transfer with consultation (alerting only)

Tested feature Result
Call can be transfered Yes
Held end hears music on hold or dialing tone Yes
Call returns to transferring device if the third

Endpoint is not available


Blind Transfer

Tested feature Result
Call can be transfered Yes
Held end hears music on hold Yes

Broadcast Group & Waiting Queue

Tested feature Result
Caller can make a call to a Broadcast Group Yes
Caller can make a call to a Waiting Queue Yes
Announcement if nobody picks up the call Yes


General Information

Firmware version

  • IP800: 6.00 sr2-hotfix6 IP800[07-60900.77]
  • IP22: 6.00 sr2-hotfix6 IP22[07-60900.77]
  • IP200: 6.00 sr2-hotfix6 IP200[07-60900.77]
  • IP230: 6.00 sr2-hotfix6 IP230[07-60900.77]

SIP - Trunk

Set an SIP Trunk via Administration/Gateway/Interface/Sip

Important is to set the right port (5082), and a stun server if the setup is behind a Nat router


It is important that on the Trunk Object (in the Pbx ) the flag Outgoing Calls no Name is set.

That means that in the P-Preferred-Identity only the extension will be sent (and so the cgpn will work correctly)


Number Mapping

There is no need to map any cgpn numbers as Tele 2 Austria need s only the extension Number and adds the access number(Trunk number) automatically.

Also for incoming calls the cdpn don't need to be mapped as Tele2 (Austria) sends only the extension to the innovaphone pbx.

Route Settings

Because Tele2 (Austria), as most SIP - Providers too, doesn't support overlap sending, you must enable the blockwise sending of the phone number. You can do this by enabling Force enblock in the automatically generated Routes.

The second setting you must check is Interworking(QSIG,SIP). This feature must be enabled to properly relay supplementary services, like Hold over the SIP Trunk. If this checkbox is unchecked only basic call Information like connect and disconnect will be forwarded by the Gateway.



The FAX was connected via a IP22 to the IP800. When configuring the IP22 you must keep in mind that you will use the analog interface for fax communication. Thats why the T.38 codec must be enabled.

Image:Tele2 SIP Compatibility Test 5.PNG

Now the PBX is setup correctly. You should be able to make call in both directions and send and receive fax messages.

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