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Overview
The SBC Edge acts as an analyzer element with an integrated Nectar solution to derive session-level media quality statistics.
The Voice Quality (VQ) reporting feature enables statistics reporting to a Nectar Unified Communication Diagnostics (UCD) server to provide quality monitoring. The information collected helps administrators to understand the media quality that users experience. With VQ monitoring, the administrators can:
- Gather statistics on media quality at individual locations or based on a grouping of subnets.
- Proactively monitor and troubleshoot media quality of experience issues.
- Perform diagnostics in response to VoIP user complaints.
- View trends that can help them with post-deployment growth and measure results against the service level agreement.
By introducing this feature to the SBC Edge, all the SIP legs of a call can now report audio metrics.
The SIP Voice Quality reporting is a licensed feature. To enable this feature, you should obtain the feature license. For more information, see Working with Licenses.
The voice metrics will be collected only in the DSP mode; audio metrics will not be collected for any call routed in the Proxy or Direct Media mode.
Configuring SIP Voice Quality Server Settings
To configure the SIP Voice Quality server:
- In the WebUI, click the Settings tab.
In the left navigation pane, go to SIP > SIP Voice Quality Server.
The following window appears.SIP Voice Quality Server Settings
Select Enable from the SIP Voice Quality Reporting drop-down menu. For detailed information on the fields, see SIP Voice Quality Server Settings - Field Definitions.
Enter the IP Address or Fully Qualified Domain Name (FQDN) of the UCD server that receives the NOTIFY.
Enter the port of the server that receives NOTIFY.
Select an entry from the Transport Protocol field. The available options are: TCP, UDP, and TLS.
When the selected Transport Protocol is TLS, then the default TLS Profile is Default TLS Profile.Enter the Reporting Interval value field.
Enter the Impairment Threshold value.
Select the SIP Signaling group(s). To select a SIP Signaling group, click Add/Edit button.
The following window appears.Selecting IP SG
- Select the SIP Signaling group(s) from the list.
- Click OK.
- Click Apply.
SIP Voice Quality Server Settings - Field Descriptions
| Field Name | Value/Range | Default Value | Mandatory | Description |
|---|---|---|---|---|
| Server Address | Valid IP Address | None |  | Specifies the IP Address or Fully Qualified Domain Name (FQDN) of the UCD server that receives the NOTIFY. |
| Server Port | 1024–65535 | 5061 | | Specifies the port of the server to receive NOTIFY. |
| Transport Protocol | 0–2 | TLS | | Specifies the transport protocol used for sending the NOTIFY. Following are the available options.
When the selected Transport Protocol is TLS, then the default TLS Profile is Default Profile (1). |
| Reporting interval | 30–3600 seconds | 300 | | Minimum value is 30 seconds. Maximum value is 3600 seconds. |
Impairment Threshold | 0.0–4.9 | 3.0 | | If the MOS value of the call is lower than the value specified in this field, the impairment NOTIFY is reported immediately. |
SIP Signaling Groups | List of SIP Signaling Group | None | | UX report the audio metrics of the calls initiating from or terminating to the SIP Signaling Groups configured in this field. |
SIP Voice quality Server Counter
To view the SIP VQ server counters, click the Voice Quality Counter option on top of the SIP Voice Quality Server Settings window.
Th following window displays that shows the counters
Voice Server Counters
Notify Message Examples
The following are examples of NOTIFY messages.
A NOTIFY sample with multiple audio metrics of vaiouss active call as payload.
NOTIFY sip:ucd-p.nectar.com:5060 SIP/2.0 Allow: INVITE, ACK, CANCEL, BYE, UPDATE, NOTIFY, OPTIONS, REFER, REGISTER Call-ID: call-D6877400-0000-0010-1B19-35@134.56.227.59 Contact: <sip: ucd-p.nectar.com;transport=TLS> Content-Length: 1234 Content-Type: multipart/mixed;boundary="boundary1" CSeq: 1 NOTIFY Event: vq-rtcpxr From: <sip:sbc.sonusnet.com:5060>;tag=8638e33b-15c Max-Forwards: 70 Supported: replaces,update,100rel To: <sip: ucd-p.nectar.com:5060> User-Agent: SONUS SBC1000 QOE2v3 Sonus SBC; Interval=30 Via: SIP/2.0/TLS 134.56.227.59;branch=z9hG4bK-UX-8638-e33b-03a4 --boundary1 rtcp-xr-30-second-report-1 --boundary1 rtcp-xr-30-second-report-2 --boundary1 rtcp-xr-30-second-report-3 --boundary1 rtcp-xr-30-second-report-4 --boundary1 rtcp-xr-30-second-report-5 --boundary1 rtcp-xr-30-second-report-6 --boundary1 rtcp-xr-30-second-report-7 --boundary1 rtcp-xr-30-second-report-8 --boundary1 rtcp-xr-30-second-report-9 --boundary1 rtcp-xr-30-second-report-10 --boundary1--
rtcp-xr-30-second-report sample:
Content-Type: application/vq-rtcpxr VQIntervalRepor LocalGroup: SONUS SBC1000 QOE2v3 UX RemoteGroup: PolycomSoundPointIP-SPIP_430-UA/1.6.6.0042 LocalAddr: IP=134.56.227.59 PORT=16510 SSRC=0 RemoteAddr:IP=134.56.225.102 PORT=2232 SSRC=1 LocalMetrics: Timestamps: START=T1 STOP=T2 JitterBuffer: JBR=v1 JBM=v2 PacketLoss: BSEQ=v1 ESEQ=v2 LPK=v3 NLR=v4 JDR=v5 BurstGapLoss: BLD=v1 BD=v2 GLD=v3 GD=v4 Delay: RTD=v1 Signal: SL=v1 NL=v2 RERL=v3 QualityEst: RLQ=v1 EXTRI=v2 MOSLQ=v3 MOSCQ=v4 RemoteMetrics: Timestamps: START=T1 STOP=T2 JitterBuffer: JBR=v1 JBM=v2 PacketLoss: BSEQ=v1 ESEQ=v2 LPK=v3 NLR=v4 JDR=v5 BurstGapLoss: BLD=v1 BD=v2 GLD=v3 GD=v4 Delay: RTD=v1 Signal: SL=v1 NL=v2 RERL=v3 QualityEst: RLQ=v1 EXTRI=v2 MOSLQ=v3 MOSCQ=v4 DialogID:29e0b53-4cea9d14-4287c345@134.56.225.102;to-tag=8638e33b-159 ;from-tag=B116EE6-FA2D00F7
A NOTIFY sample with multiple sip msgs as payload.
NOTIFY sip:ucd-p.nectar.com:5060 SIP/2.0 Allow: INVITE, ACK, CANCEL, BYE, UPDATE, NOTIFY, OPTIONS, REFER, REGISTER Call-ID: call-D6877400-0000-0010-1B19-35@134.56.227.59 Contact: <sip: ucd-p.nectar.com;transport=TLS> Content-Length: 1234 Content-Type: multipart/mixed;boundary="boundary1" CSeq: 1 NOTIFY Event: call-info.sip-msg From: <sip:sbc.sonusnet.com:5060>;tag=8638e33b-15c Max-Forwards: 70 Supported: replaces,update,100rel To: <sip: ucd-p.nectar.com:5060> User-Agent: SONUS SBC1000 QOE2v3 Sonus SBC; Interval=2 Via: SIP/2.0/TLS 134.56.227.59;branch=z9hG4bK-UX-8638-e33b-03a4 --boundary1 sip-msg-2-second-report-1 --boundary1 sip-msg-2-second-report-2 --boundary1 sip-msg-2-second-report-3 --boundary1--
sip-signaling-2-second-report sample:
Content-Type: message/sip INVITE sip:bob@biloxi.com SIP/2.0 Via: SIP/2.0/UDP pc33.atlanta.com;branch=z9hG4bKnashds8 To: Bob <bob@biloxi.com> From: Alice <alice@atlanta.com>;tag=1928301774 Call-ID: a84b4c76e66710 CSeq: 314159 INVITE Max-Forwards: 70 Date: Thu, 21 Feb 2002 13:02:03 GMT Contact: <sip:alice@pc33.atlanta.com> Content-Type: application/sdp Content-Length: 147 v=0 o=UserA 2890844526 2890844526 IN IP4 here.com s=Session SDP c=IN IP4 pc33.atlanta.com t=0 0 m=audio 49172 RTP/AVP 0 a=rtpmap:0 PCMU/8000
An impairment NOTIFY sample:
NOTIFY sip:2408881602_1@10.160.147.107:5060 SIP/2.0^M Call-ID: a3d8539f-66d34d86-d020c835@10.160.147.107^M Content-Length: 0 CSeq: 1 NOTIFY Event: call-info.mos-low From: <sip:2408881602_1@as.iop1.sonus.net:5060>;tag=aa0932b-5 To: <sip:2408881602_1@as.iop1.sonus.net>;tag=7D3BD2E8-EF598287 User-Agent: SONUS SBC2000 BSFT_REGv20 Sonus SBC Via: SIP/2.0/UDP 10.160.147.43:5060;branch=z9hG4bK-UX-0aa0-932b-0005 Content-Type: text/plain Content-Length: 90 DialogID:call-D6877400-0000-0010-0A1B-35@134.56.227.59;to-tag=B8CDB3E8-E1407421 ;from-tag=8638e33b-f5
A BYE sample with the X-Sonus-Diagnostics header
BYE sip:4001@192.168.2.221;transport=TCP SIP/2.0 Via: SIP/2.0/TCP 192.168.2.196:5060;branch=z9hG4bK50f68aedc666 Max-Forwards: 70 To: <sip:4001@192.168.2.221;user=phone>;sgid=6;tag=a38e1dd-715 From: "ux196user602" <sip:+15101966002 FREE@192.168.2.196;user=phone>;tag=708f1653 Call-ID: 5715-cf720150903203542358@192.168.2.196 CSeq: 950104510 BYE Allow: INVITE, ACK, BYE, CANCEL, REGISTER, NOTIFY, OPTIONS, PRACK, REFER, SUBSCRIBE, UPDATE Supported: 100rel User-Agent: SHOUT 4.7.2v104 Reason: Q.850; cause=16; text="normal clearing" Content-Length: 0 X-Sonus-Diagnostics: SBCInternal;moscq=4.9; moslq=4.9
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