Hi,
ich habe es selber gefunden, es nennt sich PLAR
Hier mal die Cisco Anleitung dazu:
Configuring Private Line Automatic Ringdown (PLAR)
You can configure Private Line Automatic Ringdown (PLAR), so when the user goes off hook (or the NewCall softkey or line key gets pressed), the phone immediately dials a preconfigured number. The phone user cannot dial any other number from the phone line that gets configured for PLAR.
PLAR works with features such as barge, cBarge, or single button barge. If you use PLAR with a feature, you must configure the feature as described in the feature documentation, and you must configure the PLAR destination, which is a directory number that is used specifically for PLAR.
The following example describes how to enable PLAR functionality for phones that support barge and that are running SCCP and SIP. A and A' represent shared-line devices that you configured for barge, and B1 represents the directory number for the PLAR destination. To enable PLAR functionality from A/A', see the following example:
Tip Step 1 through Step 4 apply if you want to configure PLAR for phones that are running SCCP. For phones that are running SIP, you must perform Step 1 through Step 6. Before you attempt to configure PLAR, verify that your phone model supports PLAR. To determine whether your phone supports PLAR, refer to the Cisco Unified IP Phone Administration Guide that supports your phone model and this release of Cisco Unified Communications Manager.
Example for How to Configure PLAR
Step 1
Create a partition, for example, P1, and a calling search space, for example CSS1, so CSS1 contains P1. (In Cisco Unified Communications Manager Administration, choose Call Routing > Class of Control > Partition or Calling Search Space.)
Step 2
Create a null (blank) translation pattern, for example, TP1, which contains calling search space CSS1 and partition P1. In this null (blank) pattern, make sure that you enter the directory number for the B1 PLAR destination in the Called Party Transformation Mask field. (In Cisco Unified Communications Manager Administration, choose Call Routing > Translation Pattern.)
Step 3
Assign the calling search space, CS1, to either A or A'. (In Cisco Unified Communications Manager Administration, choose Device > Phone.)
Step 4
Assign the P1 partition to the directory number for B1, which is the PLAR destination. (In Cisco Unified Communications Manager Administration, choose Call Routing > Directory Number.)
Step 5
For phones that are running SIP, create a SIP dial rule. (In Cisco Unified Communications Manager Administration, choose Call Routing > Dial Rules > SIP Dial Rules. Choose 7940_7960_OTHER. Enter a name for the pattern; for example, PLAR1. Click Save; then, click Add Plar. Click Save.)
Step 6
For phones that are running SIP, assign the SIP dial rule configuration that you created for PLAR to the phones, which, in this example, are A and A'. ((In Cisco Unified Communications Manager Administration, choose Device > Phone. Choose the SIP dial rule configuration from the SIP Dial Rules drop-down list box.)
