Howto:Voice4VPN - Telefonica O2 - SIP Testreport

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Innovaphone Compatibility Test Report

Summary

SIP Provider: Telefonica O2

The provider supports all required innovaphone features and is therefore qualified as recommended SIP Provider. If the PBX is behind a NAT - router, media - relay and STUN must be used.

Telefonica O2 has achieved 96% 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
    • G723
    • T.38 UDP

Current test state

The tests for this product have been completed.

Testing of this product has been finalized September 6st, 2010.

Testing Environment

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 Yes
call using g729 Yes
Overlapped sending No
early media channel Yes
Fax using T.38 Yes
Reverse Media Negotiation Yes
CGPN can be suppressed Yes
CLIP no screening Yes
Long time call possible(>30 min) Yes
External Transfer Yes
NAT Detection 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

Transfer with consultation

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

Transfer with consultation (alerting only)

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

Endpoint is not available

Yes

Blind Transfer

Tested feature Result
Call can be transferred Yes
Held end hears dialling 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 V8 HF5 build 80500.12 as firmware.

SIP - Trunk

First of all the SIP Trunk must be configured. Since the provider authenticates a user account only by IP - address, you cannot use the normal SIP-Gateway object. You need to configure a GW without registration and route the calls to the PBX.

Voice4VPN - Telefonica O2 - SIP Testreport 1.PNG

Number Mapping

The provider uses for all numbers(incoming and outgoing) an international number format.

Voice4VPN - Telefonica O2 - SIP Testreport 2.PNG

Route Settings

Because the provider 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 your 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.

Voice4VPN - Telefonica O2 - SIP Testreport 3.PNG

Fax

The FAX was connected via a IP302 to the IP800. When configuring the IP302 you must keep in mind that you will use the analog interface for fax communication. Thats why the T.38 codec must be enabled.

Voice4VPN - Telefonica O2 - SIP Testreport 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.