Howto:Sipgate SIP Provider Compatibility Test
Innovaphone Compatibility Test Report
Summary
SIP Provider: Sipgate
- Features:
- Direct Dial In
- DTMF
- Supported Codecs by the provider
- G711
- G729
- G726
The provider supports all required innovaphone features and is therefore qualified as recommended SIP Provider.
Sipgate does not support the hold feature correctly. When making a transfer the remote end will not hear a MOH/dialtone.
Sipgate has achieved 89% 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 11th, 2007.
Testing Enviroment
Scenario 1 (S1)
This scenario tries to be as simple as possible. The IP - PBX and the phones are all in the same network, having public IP - adresses. The signalling channel will pass through the PBX, the media channel will go from endpoint (phone) to endpoint (provider).
Scenario 2 (S2)
This scenario demonstrates a typical office installation. The IP - PBX uses both its interfaces, one interface has a public IP adress the other interface has a private IP adress. The signalling and also the media channel will be relayed by the PBX. This kind of setup is used more often then the first scenario, because of the limited ammount of public adresses.
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 S1 | Result S2 |
---|---|---|
call using g711a | Yes | Yes |
call using g711u | Yes | Yes |
call using g723 | No | No |
call using g729 | Yes | Yes |
Overlapped sending | No | No |
early media channel | Yes | Yes |
Fax using T.38 | No | No |
CGPN can be supressed | Yes | Yes |
Reverse Media Negotiaton | Yes | Yes |
Voice Quality OK? | Yes | Yes |
Direct Dial In
This test verifys if the providers supports the Direct Dial In(DDI) feature. This is very important, without DDI the provider cannot be used in company enviroments. The provider offers the customer a trunk number and a phone extenion intervall. Inovaphone uses the SIP Prefered - Identity Header to communicate the extension to the provider. Keep in mind that Sipgate will offer you only 4 phone extensions, 0 - 2 and 9.
Tested feature | Result S1 | Result S2 |
---|---|---|
Inbound(Provider -> Innovaphone) | Yes | Yes |
Outbound(Innovaphone -> Provider) | Yes | Yes |
DTMF
Tested feature | Result S1 | Result S2 |
---|---|---|
DTMF tones sent correctly | Yes | Yes |
DTMF tones received correctly | Yes | Yes |
Hold/Retrieve
Tested feature | Result S1 | Result S2 |
---|---|---|
Call can be put on hold | Yes | Yes |
Held end hears music on hold / announcement from PBX | Yes | Yes |
Held end hears music on hold / announcement from provider | No | No |
Transfer with consultation
Tested feature | Result S1 | Result S2 |
---|---|---|
Call can be transfered | Yes | Yes |
Held end hears music on hold | Yes | Yes |
Call returns to transferring device if the third
Endpoint is not available |
Yes | Yes |
Transfer with consultation (alerting only)
Tested feature | Result S1 | Result S2 |
---|---|---|
Call can be transfered | Yes | Yes |
Held end hears music on hold or dialing tone | Yes | Yes |
Call returns to transferring device if the third
Endpoint is not available |
Yes | Yes |
Blind Transfer
Tested feature | Result S1 | Result S2 |
---|---|---|
Device can transfer call | Yes | Yes |
Held end hears dialing tone | No | No |
Broadcast Group & Waiting Queue
Tested feature | Result S1 | Result S2 |
---|---|---|
Caller can make a call to a Broadcast Group | Yes | Yes |
Caller can make a call to a Waiting Queue | Yes | Yes |
Announcement if nobody picks up the call | Yes | Yes |
Configuration
SIP - Trunk
First of all the SIP Trunk must be configured. Here an example of our Sipgate - Trunk.
Number Mapping
The complicated part on this issue is the correct mapping of the outgoing and incoming numbers. Sipgate requires an E.164 number format, so the outgoing number must look something like this: 49703.. . However do not map your outgoing number to the format 0049703.. . Sipgate will accept outgoing calls but incoming calls for the number 00497031.. will not be forwarded correctly. The result is that you can call everybody, but they can't calll you back.
Sipgate Account Settings
In order for the number mapping to work correctly you must make some minor adjustments to your Sipgate Account. To do this, go to "Einstellungen" (Settings) -> "Telefonie" and change the settings of the paragraph "Absenderrufnummer setzen" to the value "setzt das Engerät".
For additional help on configuring a SIP trunk with Sipgate, please refer to: [www.sipgate.de/user/trunking.php]
Enblock Sending
Because Sipgate, 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 making some minor changes in the automatically generated Routes.
Media Relay (Scenario 2 only)
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.
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.
Now the PBX and the phones are setup correctly. You should be able to make call in both directions.