ZyXEL Communications ISG50 User Manual

Chapter 34 Call Services

ISG50 User’s Guide

The following table describes the labels in this screen. 

Call parking is similar to placing a call on hold. The difference is that you can pick the call up again 
from another telephone extension in your organization. 

The ISG50 allows you to configure a representative extension for a call parking lot. The parking lot 
places a call in parking slot and informs you of the parking slot number that you can use to 
reconnect to the parked call. You can reconnect to the call from any extension within your 
organization. The following figure shows the progression of call parking.

Call Parking Overview

A step by step progression is the following

Configuration > PBX > Call Service > Auto Callback

Enable Auto 
Callback

Select this to activate the auto callback feature.

Note: To enable auto callback, the personal auto-attendant for internal calls must also be 

enabled. See 

Queue Size

Select a limit to the number of auto callback requests for each extension. 

Apply

Click this to save your changes.

Reset

Click this to set every field in this screen to its last-saved value.

Call Parking Progression

1. Caller A makes a call to 

caller B.

2. The ISG50 routes the call to caller B 

at extension 1001.

3. Caller B picks up the call.

Conversation between caller A and B

4. Caller B transfers the call to the 

representative extension.