2.Choose the right CODEC for your location
TalkSwitch supports 3 CODECs (compression algorithms). The default CODEC is G.729 using approximately 25 Kbps bandwidth upstream and 25Kbps bandwidth downstream for each call. G.729 provides very good call quality while minimizing bandwidth usage.
The G.726 (32Kbps) CODEC is a better quality solution compared to the G.729 CODEC. However, it requires more bandwidth per call. A G.726 call typically requires 50 Kbps bandwidth upstream and 50Kbps bandwidth downstream for each call.
The G.711 CODEC provides the best voice quality. The
If the power goes out, does the VoIP network stay up?
To ensure a reliable network connection, all elements of the VoIP network should be connected to
What happens to VoIP if the IP network fails?
If the connection to the IP network is lost, it will not be possible to make VoIP calls. Calls can still be placed over the regular phone lines.
Can a firewall prevent VoIP calls from passing through?
The purpose of a firewall is to control what kinds of traffic enter and leave your network. The VoIP enabled TalkSwitch is designed with embedded applications to help traverse firewalls properly. To allow VoIP calls to pass through your firewall, you may need to use the port forwarding feature on your firewall.
TalkSwitch default uses the following ports for VoIP:
Format | Type | Unit 1 | Unit 2 | Unit 3 | Unit 4 |
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RTP (voice): | UDP | ||||
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SIP |
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(signaling): | UDP | 5060 (This port is mapped to only one unit) | |||
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