User`s guide

Vigor2850 Series User’s Guide

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SIP URL Enter your friend’s SIP Address.

Dial Out Account Choose one of the SIP accounts for this profile to dial out. It is

useful for both sides (caller and callee) that registered to

different SIP Registrar servers. If caller and callee do not use

the same SIP server, sometimes, the VoIP phone call

connection may not succeed. By using the specified dial out

account, the successful connection can be assured.

Loop through Choose PSTN to enable loop through function.

Backup Phone Number When the VoIP phone is obstructs or the Internet breaks down

for some reasons, the backup phone will be dialed out to replace

the VoIP phone number. At this time, the phone call will be

changed from VoIP phone into PSTN call according to the loop

through direction chosen. Note that, during the phone switch,

the blare of phone will appear for a short time. And when the

VoIP phone is switched into the PSTN phone, the telecom co.

might charge you for the connection fee. Please type in backup

phone number (PSTN number/ISDN number) for this VoIP

phone setting.

Secure Phone ZRTP+SRTP - It allows users to have encrypted RTP stream

with the peer side using the same protocol (ZRTP+SRTP).

Check this box to have secure call.

Note: If the incoming or outgoing calls do not match any

entry on the phonebook, the router will try to make the call

"being protected". But, if the call ends up "unprotected"(e.g.

peer side does not support ZRTP+SRTP), the router will not

play out a warning message.

For the convenience of user, this page allows users to edit prefix number for the SIP account

with adding number, stripping number or replacing number. It is used to help user having a

quick and easy way to dial out through VoIP interface.