Durchwahl (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Durchwahl" in German language version.

refsWebsite

Global rank German rank

986^th place

1,016^th place

low place

8,225^th place

2,882^nd place

4,194^th place

cisco.com

Understanding Direct-Inward-Dial (DID) on IOS Voice Digital (T1/E1) Interfaces. Cisco Systems, abgerufen am 24. Oktober 2012.

custhelp.com

btbusiness.custhelp.com

Direct Dial In (DDI) with ISDN30/30e. BT Group, abgerufen am 24. Oktober 2012.

itu.int

ITU-T I.251.1 Number identification supplementary services: Direct-dialling-In Abgerufen am 1. April 2023