Tariff overview

DUStel starter

Our DUStel starter prepaid rate is based on credit. Here, credit must be topped up in order to be able to make calls. Top-ups can be made by bank transfer, direct debit (also automated) or Paypal. Of course, the direct debit requires a valid SEPA direct debit mandate.

The top-up via Paypal is posted in real time, provided it is at least the second payment from the same Paypal account. The first payment is checked manually by us before it is credited. Automated recharge by direct debit is not a real-time application. Here, the current account balance is only ever checked at night and only then topped up if necessary. You should therefore always have sufficient minimum credit available when using the automated top-up.

DUStel complete and DUStel business flex

Our DUStel complete and business flex rates are postpaid rates and require a valid SEPA direct debit mandate. The call charges incurred in a month are billed within the first few days of the following month, together with the basic charge for the then current month, and collected by SEPA direct debit.

Public institutions and authorities that do not support SEPA direct debit are of course billed by invoice. This applies to both the DUStel starter and the DUStel business flex.

Full emergency call functionality is of course provided. Calls to 110 and 112 always reach the appropriate control center in your locality. However, it should be noted here that a correct emergency call function is no longer possible when using the telephony in a normadic way. If, for example, you use your private “home phone number” in a hotel in another city, the emergency call you make would of course reach the control center in your place of residence and not the one in the place where you are actually located.

The security functions we also provide are diverse and extensive. This allows you to limit calls in terms of time(security limit) and cost(credit limit). You can block incoming calls via the blacklist or allow only selected incoming calls via the whitelist. A destination network share restricts your outgoing telephony if desired. Here you specify which destinations you want to allow, e.g. only all Germany-wide destinations or Germany-wide destinations without 0137 lane. Or you can allow all European destinations, with landline and/or mobile networks.

If you have a fixed IP address or you know the network or networks from which you receive an IP address, you can use the IP address restriction to restrict outgoing telephony. If an unauthorized person gains access to your SIP user data and you have stored your IP address or IP network, the use of telephony by third parties is virtually impossible.

Call forwarding

Call forwarding allows two scenarios. Either your IP telephone rings first and then other forwarding destinations or the forwarding destinations are addressed directly without your IP telephone ringing first. If the first scenario is set up but your IP telephone is unavailable or busy (both can be set), forwarding will of course take effect immediately. You can enter up to 10 forwarding destinations in total, two of which can be external destinations.

Group call (parallel call)

With a group call, your telephone always rings together or in parallel with the configured parallel call destinations (group). Your IP telephone is therefore part of a group. Here too, up to 10 parallel call destinations can be entered, two of which can also be entered as external destinations.

General notes

The call forwarding and group call is always set up SIP port related. One or more phone numbers are then assigned to a SIP connection via routing. If other SIP connections are to be defined as destinations (internal destinations), then the user name (000387xxxx) is entered as the destination and not the phone number assigned to the SIP connection.

If a call forwarding or group call is already configured on the SIP port that is to serve as the destination, this SIP port cannot be a forwarding or group destination. Forwarding behind a forwarding is not possible. The same applies to the group call or to a mixed operation of both functions.

You do not need this function if you want to transmit your own telephone numbers switched with us as CLIP. This function is intended exclusively for transmitting third-party phone numbers. A possible scenario would be, for example: A customer calls you on his cell phone. On your PBX, you now want to forward this call to your own cell phone. The CLIPnoScreening function is now required to allow the transmission of the caller’s mobile phone number.

For liability reasons, the activation of this function requires a written agreement, which you must sign and send to us. You will receive this on request or directly with the order, if this feature is desired. In addition, we require a telephone number that has been activated with us to identify you or your company. This number is sent with every outgoing call, but is not displayed to the called party.

For the DUStel business flex rate, you can optionally add a real call distribution system (automated call distribution, queuing system), called DUSqueue.

The DUSqueue is mainly used in order acceptance or support hotlines. Via a central order or hotline number, all callers are first “parked” in a queue and remain there until an employee (agent) connected to the system answers the call. The agent logs onto the system to be part of the support team and logs out when they finish their work. The booking can be done from anywhere, e.g. from the employee’s home office.

The queue system DUSqueue offers a multitude of setting options and also allows you to individually use music on hold or announcements when the queue is open or closed. For a perfect evaluation, extensive statistics are also available. There, all calls are counted, totals and average values about waiting times are calculated and much more.

An IVR (Interactive Voice Response) menu is an automated telephone system that guides callers through a menu structure by keystroke or voice to determine their request and route them to the correct department. The system plays announcements such as “Press 1 for…” to connect the customer to a specific contact person or to further information instead of connecting them directly to an employee.
This can be built up from a single level up to several levels. Of course, you can include your own announcements, define individual employee telephones or complete call groups as destinations.