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Contents Exit focus mode. What are dial plans? Note If you specify an external access prefix, you don't need to create an additional normalization rule to accommodate the prefix. Note Normalization rules with the first token as optional are currently not supported on 3pip devices for example, Polycom VVX model. Note The normalization rules names shown in the preceding table don't include spaces, but this is a matter of choice.
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Translates numbers with on-net prefix 6 and Redmond site code Translates 5-digit extensions starting with the digit range between inclusive. In addition, the dial plan basically defines as to what information may be entered by which call participant. It can e. It is also possible to block chargeable call numbers with the help of dial plan. In this case, the dial plan can prevent the dialling of numbers beginning with , or other numerical sequences and instead forward the call participant to a standard call message.
Dial plan has a specifically defined syntax depending on the type of telephone network or the telephone system model. Join one of our twice weekly webinars for a guided tour of our business phone system and features. VoIP Provider. Hosted VoIP Plans. Error Sorry. Search FAQs. What is a dial plan? This is certainly possible! Figure shows how gateways manage inbound PSTN calls.
The processing of an inbound PSTN call occurs in these steps:. Figure provides a description of the required number manipulation when a gateway receives an inbound PSTN call. Figure shows the call flow for an outbound call.
The access code is 9. The processing of an outbound PSTN call occurs in these steps:. Figure summarizes the requirements for number manipulation when a gateway processes an outbound PSTN call.
The type of number TON or nature of address indicator NAI parameter indicates the scope of the address value, such as whether it is an international number including the country code a "national," or domestic number without country code , and other formats such as "local" format without an area code. It is relevant for E.
In Figure , three different calls are received at the voice gateway. The first call is received from the local area with a subscriber TON and a seven-digit number. This number only needs to be prefixed with access code 9. The second call, received with a national TON and ten digits, is modified by adding access code 9 and the long-distance number 1, all of which are required for placing calls back to the source of the call. The third call is received from oversees with an international TON.
For this call, the access code 9 and must be added to the received number, as a prefix to the country code. Digit manipulation is closely related to call routing and path selection. Digit manipulation is performed for inbound calls to achieve these goals:. Calling privileges are equivalent to firewalls in networking.
They define call permissions by specifying which users can dial given destinations. The two most common areas of deploying calling privileges are as follows:. Calling privileges are referred to as a "Class of Service," but should not be confused with the Layer 2 class of service CoS that describes quality of service QoS treatment of traffic on Layer 2 switches.
Figure illustrates the typical deployment of calling privileges. The internal endpoints are classified into three roles: executive, employee, and lobby. Each role has a set of dialable PSTN destinations that is associated with it. The executives can dial any PSTN number, the employees are allowed to dial any external numbers except international destinations, and the lobby phones permit the dialing of local numbers only. Figure Calling Privileges Example. Call coverage features are used to ensure that all incoming calls to Cisco Unified Communications Manager Express are answered by someone, regardless of whether the called number is busy or does not answer.
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