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Chapter 2: Voice Over IP Settings 37

SIP Registration

Interval

Time (measured in seconds) between

registration requests to the VoIP service.

Default is 30.

Authentication

Method

Security authentication method that your

VoIP service provider uses. Default is MD5

(Message Digest 5), RSA-sanctioned

cryptographic algorithm.

Local SIP Port

The port that the X5v uses, vs. the SIP port

that the service provider’s equipment uses.

Default is 5060.

RTP Media Port

Base IP port that the X5v uses for RTP

(Real-Time Transport Protocol, an Internet

protocol for transmitting data such as audio

and video in real time). Default is 5000.

Codec Preferences

You can prioritize the codecs

(COde/DECode) to use from 1 to 3. First

priority default is G.711u (North America

best voice quality). Other choices are G711a

(outside of North America) and G729 (uses

less bandwidth).

2.3 Call Forwarding and Call

Waiting

The Supplementary Services page displays the X5v’s VoIP call

management features such as call forwarding and call waiting. Click

its button on the bottom of the Voice Over IP page.

Important: The X5v’s call forward capabilities are displayed on

this page. However, to activate these functions, you must enter

the X5v’s VoIP call management commands using your telephone

keypad. The section immediately following the table, Activating

Call Management Features, explains how to do this.

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Zoom X5V User Manual Page 37