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Run this basic speed test to obtain your downoaddownload, upload, latency, and jitter results.
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Sharpen strongly discourages the use of “combination” network equipment such as all-in-one modem/router devices. ISPs typically provide or rent these out to customers. They are known for having issues with VOIP traffic as well as having limited access to critical settings. If you are using a combination device and experiencing issues, the first step is to acquire a stand-alone modem and router.
If you can not acquire a stand-alone modem and router, we recommend reaching out to your ISP to see if they can place your combination device in “bridge” mode, then purchasing and connecting a 3rd party router to handle the local networking.
Allow SIP, UDP and RTP protocols - Sharpen uses these to send and receive traffic.
Ensure UDP timeouts are greater than 240 seconds (phones register every 240 sec).
Disable Stateful Packet Inspection (SPI) as it often flags VOIP traffic incorrectly.
Disable SIP ALG and/or SIP Transformations (this varies by router).
Disable any VOIP specific functions that come pre-setup on your network equipment.
Sharpen traffic over a VPN is discouraged due to likely latency and quality of service concerns.
Sharpen traffic over an MPLS is discouraged due to potential inefficient rout route paths to voice resources.