Siemens a580ip 사용자 가이드

Gigaset A580 IP / US English / A31008-xxxx-xxxx-x-xxxx / web_server.fm / 28.04.2009

Ve

rs

ion 8,

 03

.09

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8

Define the protocol (the contents of the "Refer To" information) that should be 

used with preference when forwarding calls:

This protocol is recommended for "closed" networks (internal company and 

business networks).

This protocol is recommended when the base station is connected to the 

Internet via a router with NAT. 

If you select 

, the base station will automatically attempt to determine the 

best protocol. 
If the base station cannot determine the best protocol, it will use the protocol 

defined in 

. 

¤

Select 

 to save your settings.

Specify which local communication ports (port numbers) the telephone is to 

use for VoIP telephony. The ports must not be used by any other subscriber in 

the LAN. 
The following communication ports are used for VoIP telephony:

u

Communication port via which the phone receives (SIP) signaling data.

u

Two consecutive RTP ports (consecutive port numbers) are required for each 

VoiP connection. Voice data is received via one port and control data via the 

other.

You can set port numbers or port number areas for SIP and RTP ports, or set 

your telephone so that it can use any number of free ports from a predefined 

range of port numbers. 

¤

Open the following Web page: 

 

¢

 

¢

.

For information on forwarding a call when you deactivate both 

initiate call transfer with the SIP Refer method. 

and 

, 

.