Showing 50 items.
- Country code (links | edit)
- List of country calling codes (links | edit)
- E.163 (redirect to section "E.163") (links | edit)
- X.25 (links | edit)
- E.164 (links | edit)
- Public switched telephone network (links | edit)
- E.123 (links | edit)
- Outline of the United Nations (links | edit)
- Telephony copper plant retirement in the United Kingdom (links | edit)
- Wikipedia:WikiProject Short article clean-up/August Dump/E/1-500 (links | edit)
- ITU-T (links | edit)
- Telecommunications in Nauru (links | edit)
- Network service access point address (links | edit)
- X.25 (links | edit)
- E.164 (transclusion) (links | edit)
- Voice over IP (links | edit)
- Numbering scheme (links | edit)
- International mobile subscriber identity (links | edit)
- SIM card (links | edit)
- North American Numbering Plan (links | edit)
- Telephone number mapping (links | edit)
- Public switched telephone network (links | edit)
- Telephone numbering plan (links | edit)
- Callback (telecommunications) (links | edit)
- Global title (links | edit)
- E.214 (links | edit)
- E.123 (links | edit)
- Country codes: A (links | edit)
- Country codes: B (links | edit)
- Country codes: C (links | edit)
- Country codes: D–E (links | edit)
- Country codes: F (links | edit)
- Country codes: G (links | edit)
- Country codes: H–I (links | edit)
- Country codes: J–K (links | edit)
- Country codes: L (links | edit)
- Country codes: M (links | edit)
- Country codes: N (links | edit)
- Country codes: S (links | edit)
- Country codes: T (links | edit)
- Country codes: U–Z (links | edit)
- .arpa (links | edit)
- MSISDN (links | edit)
- Seven-digit dialing (links | edit)
- Distributed Universal Number Discovery (links | edit)
- ISO/IEC 7812 (links | edit)
- Nominal number (links | edit)
- International direct dialing (links | edit)
- Mobile Station Roaming Number (links | edit)
- Area code 868 (links | edit)
- H.323 Gatekeeper (links | edit)
- Universal Personal Telecommunications (links | edit)
- Least-cost routing (links | edit)
- Telephone numbers in the Republic of Ireland (links | edit)
- White, black and grey routes (links | edit)
- Marratech (links | edit)
- Country codes: R (links | edit)