Maximum number of VoIP lines for outgoing calls:

The maximum number of VoIP numbers available is determined by how many lines are available (shared) with the TalkSwitch VoIP network. For business reasons, you might want make all lines available for incoming calls and restrict outgoing calls so that no incoming calls are getting missed. It is recommended that at least one line be allocated for outgoing calls.

Codec Options (button)

A codec is a method of compressing and decompressing audio signals for communication across digital networks. TalkSwitch supports 3 standardized VoIP codecs:

G.729 (default — low bandwidth)

G.726 (better voice quality — medium bandwidth)

G.711 (best voice quality — high bandwidth)

One of these codecs must be selected as the Preferred Codec. By default G.729 is used to accommodate the maximum number of concurrent calls.

Voice Activity Detection (VAD) analyzes an audio stream to detect the presence or absence of speech and distinguishes speech from background noise. VAD can be used to reduce voice bandwidth when no speech is detected and reduce unwanted noise transmission.

Figure 130: Codec

View Registrar Entries (button)

If this location is the designated SIP server (proxy/registrar), click this button to view which systems are registered with the SIP server. A window opens listing all TalkSwitch systems and gateways registered with this system. Client is the phone number assigned to a VoIP line. Contact is the information used by the SIP server to contact the client. It is comprised of the phone number, public IP address and part number. Expires is the amount of time, in seconds, that the client is registered with the SIP server before having to re-register.

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Talkswitch 48-CA/CVA Maximum number of VoIP lines for outgoing calls, Codec Options button, View Registrar Entries button