Howto:Gotanet SIP Provider Compatibility Test

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Innovaphone Compatibility Test Report


Contents

Summary

SIP Provider: Gotanet

The provider does not support all required innovaphone features and is therefore not a recommended SIP Provider.

Early media is not supported. Typical examples of early media generated by the callee are ringing tone and announcements (e.g., queuing status) or DTMF tones to drive interactive voice response (IVR) systems.

Also calls to the PSTN having a duration longer than 30 minutes are not possible.

That being said, Gotanet has achieved 82% of all possible test points. For more information on the test rating, please refer to Test Description

  • Features:
    • Fax over IP (T.38)
    • DTMF
  • Supported Codecs by the provider
    • G711A/U
    • G729
    • G723
    • T.38 UDP

Current test state

The tests for this product have been completed.

Testing of this product has been finalized April 9th, 2009.

Testing Environment

Scenario NAT

Image: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 Yes
call using g729 Yes
Overlapped sending No
early media channel No
Fax using T.38 Yes
CGPN can be supressed No
Long time call possible(>30 min) No
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
Held end hears music on hold / announcement from provider 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 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

Configuration

Firmware version

All innovaphone devices use V7 HF5 as firmware.

SIP - Trunk

First of all the SIP Trunk must be configured. Here an example of our SIP - Trunk.

Image:Teleman-DDI SIP Compatibility Test 1.PNG

Number Mapping

The complicated part on this issue is the correct mapping of the outgoing and incoming numbers. Gotanet expects the CGPN for outgoing calls to be in national number format.

Image:Teleman-DDI SIP Compatibility Test 2.PNG

Route Settings

Because Gotanet, as most SIP - providers too, doesn't support overlap sending, you must enable the block wise 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.

Image:Teleman-DDI SIP Compatibility Test 3.PNG

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.

Image:Teleman-DDI SIP Compatibility Test 4.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.

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