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Common Issues

Common issues with network setup and quality of service of VoIP

  • Disable SIP ALG (SIP Helper) on Mikrotik Routers

    Mikrotik SIP ALG is called a SIP Helper and is located under /IP>Firewall>Service ports.  The SIP Helper feature must be disabled to properly allow VentureTel VoIP traffic to pass through the Mikrotik...

  • Disabling SIP ALG

    Disabling SIP-ALG is an essential part of setting QoS on a router and optimizing it for your VentureTel service. Many ALGs (including Cisco's) have bugs which cause call flow and registration failures...

  • Adjusting Netgear Routers to Support VoIP

    Netgear ships their routers so that out of the box they rewrite SIP (VoIP) packets due to their stateful packet inspection (SPI) firewall & SIP ALG.  However, Netgerrs implementation of the SPI firewa...

  • VoIP Bandwidth Utilization

    When you are using Voice over IP, the used VoIP phones and PBX can use different so called codecs. The consumption of bandwidth depends on which codec you use.  The following table gives you a short o...

  • Configure Dell Sonic Wall for VentureTel VoIP

    Step 1: Go to VoIP > Settings.  Step 2: Check Enable Consistent NAT, uncheck/disable everything else. Step 3: Click  Accept to save the settings....

  • QoS Testing

    This walk-through will take you through the steps required to run a connection test (VoIP, Speed etc.) using the Visualware BCS. Download and Install the BCS Download the BCS from here. Follow the ins...