Bizfon 7000 User's Guide download pdf (Page 34)

System Administration Guide Configuring Bizfon IP2 Phones

50 Stiles Road • Salem, NH 03079 • Toll Free 1-800-260-5793 • 603-870-9400 • www.Bizfon.com

Revised: August 5, 2005 Page 30

8.3.1 Description of Options

Codec Preference Order – Sets the preferred codec order in the phone. The codec is the method of

encoding/decoding the audio sent to and received by the phone. The two possible codec’s are G.711 and

G.729A. G.711 preserves voice quality, but takes more bandwidth. G.729A takes less bandwidth, but reduces

voice quality. Note that this only sets the preferred codec order. Not all codec’s are supported for all call types

(for example, accessing the server auto attendant requires G.711). To maintain operability, the phone will use

whichever codec is required to support the call. This means that your preferred codec won’t always be the one

used.

Jitter Buffer Size – Jitter is a variation in network audio packet latency experienced by the phone, resulting in

a reduction in audio quality. The phone uses a jitter buffer to maximize the audio quality when jitter occurs.

This configuration parameter can be used to alter the size of the jitter buffer.

Off Hook Digits Dialed – Enables the phone to automatically dial some digits whenever the phone is taken off

hook.

• An example of this is a service phone placed at a locked door or loading dock where all dialing is

disabled and want the phone to automatically dial a predefined number when it is taken off hook.

• Another example might be to have the phone automatically dial ‘9’ (or ‘8’ + PIN Code) to get an outside

line. Note that these digits will always be dialed when the phone is taken off hook, so this might

interfere with other uses of the phone. For example, if the phone is configured to automatically dial ‘9’,

the user will not be able to use PBX features that don’t start with ‘9’ (Call Park, Call Forwarding, etc.).

Paging Zones – Sets the list of paging zones that the phone will participate in. For example, if the sales team

uses zone 3 for pages to the entire team, then this option on the team member’s phones must be set to include

zone 3.

SIP NAT Keep-alive Interval – Some NAT firewalls will automatically timeout connections. If a remote phone

is behind such a firewall, then this setting allows a keep-alive packet to be sent from the phone to the Bizfon

server at the frequency specified. When set to an interval more frequent than the firewall timeout, this will

prevent the firewall from timing out the connection.

Enable Auto On Hold – When one call is active on the phone and another call comes in (with a free Call/Line

Appearance PFK), if the PFK for the new call is pressed, the first call is automatically put on hold instead of

terminated.

Enable Auto Retrieve Calls – When the phone is on hook and a call is on hold, then when the phone is taken

off hook, the on hold call is automatically retrieved. When this is not enabled, the phone gets an open line (if

available) when taken off hook.

Enable DTMF Playout – DTMF digits are allowed to be sent during an active call.

Enable Keypad Dialing – If not enabled, the keypad cannot be used to initiate or transfer a call. This does not

prevent the keypad from functioning during an active call. It prevents the use of the keypad to initiate any

functions directly with the Bizfon server (for example: dial number, Call Park, etc.).

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Bizfon 7000 User's Guide Page 34