10.7	ISDN Numbering Plan (E.164) V7 or Later

ISDN numbering plan (E.164)

The ISDN numbering plan (E.164) is a new numbering plan for addressing telephone networks. It specifies the different parts of the telephone number and the number of permissible digits (country code, network area code, system phone number). The ISDN numbering plan (E.164):

•	improves integration in networks with HiPath 4000

•	connection to Internet telephony service providers

The plan can be configured using Manager E.

When networking with the ISDN numbering plan (E.164), you must ensure that HiPath 3000/5000 is permitted to transmit the number of the called station (dialing information) with the Type Of Number TON = unknown and that the networked system always transmits a fixed Type Of Number TON (and not another type).

Objective of E.164 networking

The objective of networking with E.164 is to transmit all station numbers in a network in an international format, in a network with HiPath 4000, for instance. Station numbers, however, should be shown on displays in the most suitable format.

The stations can be reached via a public station number, in other words, the national or international E.164 station number (internal calling party number in ISDN format, for instance), without having to first dial a node number. Each station is represented by its E.164 number that can be displayed in the most suitable format.

•	Telephone numbers in the HiPath 5000 RSM network are shortened to the station number.

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Maintaining the port number list, which contains all ISDN numbers of all nodes in the HiPath 5000 RSM network. The numbers of nodes outside the HiPath 5000 RSM network (HiPath 4000, for instance) are not entered. These numbers are shortened to the most suitable format using the location station number.

SIP

When E.164 numbering is activated, the internal number is transmitted in E.164 format. SIP stations are registered using the full E.164 number (location number + internal number, 4923026673665, for instance).

If an Internet telephony service provider is to be used and the Internet telephony service provider's station number is made available in an E.164 network, the station allocation must be entered. The shortest dialable station number is always used for the allocation.

In HG 1500, the SIP station number is allocated to the extension (the internal extension is usually entered here).

Example: If the Internet telephony service provider is connected to the node at the Witten site and a subscriber from Munich should use an SIP number, the number 008972212345 is entered during allocation in the HG 1500 at the Witten site. The shortest dialable station number is always entered. This is also the shortest number that the customer would dial on a telephone (the number the subscriber in Witten uses to call the subscriber in Munich).

Calling party identification:

HiPath 3000/5000 supports correct calling party identification when networking systems that have the same system phone number.

If nodes with different system phone numbers are used in the network, the full system phone number is retained in the calling party's number.

In networks with different system phone numbers, calling party numbers are displayed correctly if open numbering is used (different area codes).

HiPath 3000/5000 V9, Feature Description, Issue 10		up
Disclaimer & Copyright	ID: P31003H3590F100017618	2014-02-27