Voltage and Current monitoring are useful troubleshooting tools to test your telephone line. Currents above 40mA can damage equipment over time. Device IO indicates which hardware connection is associated with that software block. Auto Disconnect provides three methods of call termination the method used depends on the far-end equipment. Note:Auto Disconnect reliability may be affected by intermittent line interruptions or cellular calls.
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VoIP basics Before diving into technical details, this simple overview diagram is a good start to summarize steps involved in a VoIP call. Success of this process is obviously sensitive to delay and packet loss. Protocol: Similar to how a language enables communication between people, a protocol defines a set of rules used to control connection, communication and data traffic between different network devices.
Codec: It refers to the software algorithm used to encode the voice signal into a compressed data format optimized for transmission over IP. On the receiving side, signal is decoded back to analog audio. Codec quality obviously affects audio performance.
Note that SIP does not handle voice transmission, it only manages the communication. Their purpose is to provide name resolution, user location and pass on messages to other servers in the network. A SIP address is similar to an e-mail address and may be of two types: a user name sip: support biamp. VoIP-2 card only supports E. Quality of Service QoS : A protocol used to prioritize different types of network traffic by guaranteeing a certain level of performance.
The network is then aware of the location of a device upon request. When a user initiates a call, the SIP discovery process starts by sending a request to a SIP server proxy or redirect server. The challenge for the proxy server is to obtain the IP address of the device such that voice data can be routed between them. Negotiating a compatible data format sample rate, codec In other words, VoIP-2 is capable of inserting the necessary information to the IP header such that network infrastructure can handle its traffic with priority.
Manual software configuration of the VoIP-2 card is necessary for proper operation. Double clicking on the block allows mute and gain adjustments, the Call Progress Tone section provides level adjustment for any internally generated tones, such as dial tone, busy tone, ring tone, etc.
Its control dialog box allows for level adjustment and muting of both transmit audio signals. Codec support This table summarizes specification of each supported codec.
Step-by-step setup instructions 1. Note that the VoIP-2 card does not allow the use of fully qualified addresses, you must configure the system to allow the extension to register using an IP address. Once the. Troubleshooting VoIP Most cases of connection failure, audio drop outs, or inability of place a call are typically network related issues that can only be solved by the local IT department.
We therefore strongly recommend that you communicate your concerns with the IT department in charge and coordinate with them troubleshooting of the VoIP infrastructure. It contains the same controls to the exception of an Auto-Answer and Hold toggle buttons. These two new features will add more flexibility to your daVinci panels. Typical daVinci look and feel customizations are available as well. Further reading VoIP is a complex topic that certainly requires a lot more than a few pages to be fully understood.
We recommend it to be your starting point for further information on the VoIP-2 interface setup. Use this document to facilitate setup of the VoIP connection. Download is available here.
Analog telephone interface basics