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US5625677A
(en)
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Simultaneous voice and data communications
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US5175761A
(en)
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Call transfers by voice messaging system (VMS) integrated to a private branch exchange
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DE69636988T2
(de)
|
|
Verfahren und gerät zum implementieren eines rechnernetzwerk-/internet-fernsprechsystems
|
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US5867571A
(en)
|
|
Method and arrangement for establishing call connections in a telecommunications network using a virtual transport server
|
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US6215783B1
(en)
|
|
Private IP telephony backbone linking widely-distributed enterprise sites
|
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US8031698B2
(en)
|
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Telephony intelligence in a data packet network
|
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JPH04291595A
(ja)
|
|
仮想私設網接続方式
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US4445211A
(en)
|
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Arrangement for multiple custom calling
|
|
US20080247517A1
(en)
|
|
Technique for providing a telecommunications user with a service based on the user's location
|
|
EP1129545A4
(en)
|
|
INTEGRATED TELEPHONY NETWORK COMBINING A PACKET DATA NETWORK AND A SPECIALIZED CONNECTION NETWORK
|
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JPH0463094A
(ja)
|
|
Ｐｂｘテナントサービスの方路選択方式
|
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US20110317690A1
(en)
|
|
System and method for voice-activated dialing over implicit and explicit nfa trunks
|
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BE396712A
(instruction)
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|
|
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US4446553A
(en)
|
|
Arrangement for multiple custom calling
|
|
US20060062372A1
(en)
|
|
Abbreviated dialing between PBX and Centrex systems using a VoIP platform
|
|
WO2001013673A1
(en)
|
|
Method and a network node for selectively transferring data to multiple networks
|
|
EP0821512B1
(fr)
|
|
Procédé de mise à disposition de services à des abonnés d'un réseau téléphonique
|
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US6483904B1
(en)
|
|
Method and system for high-speed interface access to a computer network using a subscriber telephone line
|
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US4446554A
(en)
|
|
Arrangement for multiple custom calling
|
|
SE506475C2
(sv)
|
|
Tjänste- och förbindelseseparerat nät
|
|
US3211838A
(en)
|
|
Traffic between private automatic branch telephone exchanges
|
|
US4445212A
(en)
|
|
Arrangement for multiple custom calling
|
|
BE488676A
(instruction)
|
|
|
|
BE464782A
(instruction)
|
|
|
|
Bocker
|
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ISDN Structure |