Howto:TDC PBX-SIP Trunk - TDC - SIP Testreport

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Innovaphone Compatibility Test Report

Summary

SIP Provider: TDC

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

That beeing said, the provider has achieved 90% of all possible test points. For more information on the test rating, please refer to Test Description


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

Current test state

The tests for this product have been completed.


Testing of this product has been finalized August 28th, 2008.

Testing Enviroment

Scenario NAT

HFO SIP Compatibility Test 5.PNG

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 No
call using g729 Yes
Overlapped sending No
early media channel Yes
Fax using T.38 Yes
CGPN can be supressed No
Reverse Media Negotiaton Yes
Voice Quality OK? Yes

Direct Dial In

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

DTMF

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

Hold/Retrieve

Tested feature Result
Call can be put on hold Yes
Held end hears music on hold / announcement from PBX Yes

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

Yes

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

Yes

Blind Transfer

Tested feature Result
Call can be transfered Yes
Held end hears dialing tone No

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

Configuration

Firmware version

All innovaphone devices use V6 SR2 HF6 as firmware.

SIP - Trunk

First of all the SIP Trunk must be configured. TDC awaits in the From Header the complete Calling Party Number(CGPN). The default innovaphone setting is to not send the complete CGPN in the FROM - Header, but in the Preffered Identity Header. Change the setting From Header: to CGPN in user part of URI.


Since TDC awaits your 'AOR' information in the 'Preffered Identity' header, you must also adjust the 'Identity Header when Sending INVITE' filed to 'Fixed AOR'.

TDC PBX-SIP Trunk - TDC - SIP Testreport 1.PNG

Number Mapping

TDC PBX-SIP Trunk - TDC - SIP Testreport 2.PNG

Route Settings

Because TDC, 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 your routes.

The second setting you must check is Interworking(QSIG,SIP). This feature must be enabled to properly relay suplementary 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.

TDC PBX-SIP Trunk - TDC - SIP Testreport 3.PNG

Media Relay

By enabling Media Relay on the PBX, The IP800 will work as an RTP - Proxy, so all RTP Streams will travel through the IP800. This mode poses a much greater load on the PBX, so the number of concurrent calls will be heavy limited.

TDC PBX-SIP Trunk - TDC - SIP Testreport 4.PNG

You may wonder about the usefullness of putting the localhost address as a private network. However you must insert this entry, if the IP800 SIP GW registers at the PBX on localhost interface.

Fax

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.

TDC PBX-SIP Trunk - TDC - SIP Testreport 5.PNG

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