SIP Trunking Success

Transcription

1 SIP Trunking Success Gary Audin

2 SIP Trunk Value Propositions Flexible Provisioning Eliminate VoIP Gateways Reduced Conferencing Costs Reduced International Calling Charges On-Net Free Calling Provider Competition and Enterprise Leverage

3 SIP School SIP Trunk Survey Surveyed for 2011/2012/2013/2014/ responses for 2015 survey 52.21% USA 8.50% UK 7.14% India 6.53% Canada 2.04% Germany 23.47% Other countries

4 Status Of SIP Trunking

5 Number of SIP Trunks in Use

6 SIP Survey Results 2014/15 Increased number of sites per enterprise Increased IP PBX installations Major issues not changed much from 2014 Some basic functionality has worsened, not improved such as one way audio and codecs Confidence in dealers and resellers is remains low

7 Where Are the Problems?

8 SIP Trunk Success Good Design Great Support Testing / evaluation before commissioning Interoperability Matrix Good manufacturer documentation Certified Configurations Good Connectivity Smart People Good SIP knowledge

9 SIP Trunk Provider Problems

10 SBC/Edge Device Problems

11 IP PBX Problems

12 Did You Trial the SIP Trunk?

13 Who Can Fix It?

14 Preventing the Problems There will be at least three interested parties to the SIP trunk implementation, IP PBX/UC vendor, SBC vendor, and SIP trunk provider. Do not take the responsibility of coordinating these three without getting them together before and during the SIP trunk implementation. You are not the SIP trunk expert. They are. Test the configuration, features to be implemented, and the capacity (number of simultaneous calls) that is required. Make no assumptions. The vendors and providers have checklists of what they will perform during the implementation. Obtain these checklists and verify they have used the checklists to validate the installations. If there are no checklists, create your own checklists by communicating with other enterprises that have implemented SIP trunks. Use The SIP Survey 2015 to anticipate the issues that can occur.

15 Resolving the Problems (1) When trunks continue to drop after some successful operation, check the provider s IP connection. Check the configuration settings on the SBC. Set up a signaling trace to verify that the SIP signaling is operating properly. When registration is not stable, first verify that the Internet connection is operating properly. Check the refresh time in the trunk s overflow and failure rate settings Keep Alive Time to about 20 seconds. If registration does not work at all, verify that the correct password and authentication are in use. If a firewall is in the connection to the SIP trunk, verify that the firewall will pass and not filter SIP signaling. It could be blocking the signaling.

16 Resolving the Problems (2) Test the codec settings and for one way audio before initializing the SIP trunk connection. Audio quality problems are more likely associated with no QoS in use or not enough bandwidth has been allocated for the trunk. The SBC and/or the IP PBX should have the ability to detect ITSP/SIP server failures. The enterprise cannot fix this problem, but rapid notification to the providers by the enterprise will reduce the outage time. If this persists, then consider terminating the SIP trunk agreement.

17 Resources SIP Training and Certification, SIP Trunking is More than a PSTN Connection, The SIP Survey 2015, Why SIP Problems Persist--and What to Do About Them Different Year, Same Old SIP Trunk Provider Problems

18 Presentation Schedule The Cases for WebRTC 9:30 AM Tuesday and 1 PM Wednesday Security Tools and Techniques 11 AM Tuesday and 1:30 PM Wednesday SIP Trunking Success 12:30 PM Tuesday and 2 PM Wednesday State of IoT 3 PM Tuesday and 2:30 PM Wednesday

19 Panel Schedule Conferencing and Collaboration Keep Growing: How Can You Grow with It? 10:00 AM Tuesday Securing the Network 11:30 AM Tuesday Leveraging Cloud Services in the SMB 2 PM Tuesday