Operation Manual

482 COMfortel 1400IP/2600IP/3600IP - Firmware V2.2G - Operation and Configuration V03 07/2015

Settings

Providers and PBXs

Switching the Use of Exchange Line Numbers On/Off

Exchange line numbers must be used for PBXs which allow you to dial external telephone

numbers without preceding exchange line access numbers or characters (e. g. 0 or **). Such

PBXs automatically detect whether exchange line access is required or not.

Note: This function is currently not available on Auerswald PBXs.

If the use of exchange line numbers for an internal subscriber is enabled, rules for internal and

external calls, e. g. for the answering machine, are taken into account when a call comes in. In

addition, you can forward an incoming call to an external telephone number without having to

dial the exchange line access number.

You can configure the use of exchange line numbers as follows:

• Separately for the provider or PBX

• Using the configuration manager

• Using the telephone

Using the Configuration Manager to Switch the Use of Exchange Line Numbers On/Off

Requirements:

– Not operable on Auerswald PBXs

– Set type PBX

1. Open the Settings > Providers & PBXs screen.

Disabled: Forces de-activation of call data encryption by SRTP. The

connection is not established if the call partner (VoIP provider, other PBX in the

sub-system operation, external VoIP subscriber) requires call data to be

encrypted by SRTP.

Preferred: Switches on negotiation for the encryption of call data by SRTP.

When a call is made, the call partner will be asked if encryption is possible. If

so, the call data will be encrypted and then transmitted, if not, the call data will

not be encrypted.

Mandatory: Forces activation of call data encryption by SRTP. The connection

is not established if the call partner (VoIP provider, other PBX in the sub-

system operation, external VoIP subscriber) does not support the encryption of

call data by SRTP.