Howto:Legos SIP Provider Compatibility Test
Summary
SIP Provider: Legos
The provider has achieved 81,67% of all possible test points (98 on total of 120 Points). For more information on the test rating, please refer to Test Description
- Features:
- Direct Dial In
- Fax over IP (T.38)
- DTMF (Sip-info not supported)
- Redundancy Mechanism
- Supported Codecs by the provider
- G711 a/u
- G729
- T.38 UDP
Current test state
The tests for this product have been completed and it has been approved as a recommended product (Certification document).
Testing of this product has been finalized in May, 2012.
Testing Enviroment
Scenario NAT
This scenario describes a setup where the PBX and phones are in a private network. The IP800 should use a stun server, in order to send correct SIP - messages. Media-relay on IP800 SIP Trunk Interface to provider is also required, 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 | X |
Call using g729 | Yes |
Call using g722 | X |
Overlapped sending | X |
Early media channel | Yes |
Fax using T.38 | Yes |
CGPN can be suppressed | X |
CLIP no screening | X |
Reverse Media Negotiation | X |
Long time call possible | Yes |
External Transfer | Yes |
NAT Detection | X |
Voice Quality OK? | Yes |
Redundancy Mechanism | 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 sent correctly via SIP-Info | X |
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 | X |
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 V9hf12 as firmware.
SIP - Trunk
Here's the configuration of the SIP gateway interface.
LEGOS 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.
Number Mapping
Route Settings
LEGOS, as most SIP Providers do, doesn't support overlap sending. You must enable the enblock sending of the phone number. You can do this by enabling Force enblock in the appropriate outgoing Route.
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 check-box is unchecked only basic call Information like connect and disconnect will be forwarded by the Gateway.
Known Issues
We encountered some problems on receiving faxes over T.38 if also the sender were using T.38. Disabling t.38 on the sender side (t.38 wasn't necessary as the fax was sent via ISDN) solved the problem.