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US5255315A
(en)
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Method of rerouting telecommunications traffic
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JPH07203081A
(ja)
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情報サービスシステムと情報サービスの提供方法
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US6628769B1
(en)
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Intelligent network
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CZ104497A3
(en)
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Switched network and a telecommunication system containing such switched network
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US4782508A
(en)
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Method of discouraging the completion of wrong-number calls
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CA2146186A1
(en)
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Enhanced efficient telephone number portability
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US6289088B1
(en)
|
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Pay phone call completion method and apparatus
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BE374732A
(enrdf_load_stackoverflow)
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CH395200A
(fr)
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Installation de sélection d'un central de télécommunication automatique
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US5652753A
(en)
|
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Digital telephone
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GB208509A
(en)
|
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Improvements in or relating to telephone systems
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US6256380B1
(en)
|
|
Methods for processing operator service system calls
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CA2200631C
(en)
|
|
Security station receiver
|
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US2087398A
(en)
|
|
Automatic switch for use in telephone or like systems
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BE373049A
(enrdf_load_stackoverflow)
|
|
|
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EP1493166B1
(en)
|
|
Relay and cross-connect
|
|
BE374766A
(enrdf_load_stackoverflow)
|
|
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BE531767A
(enrdf_load_stackoverflow)
|
|
|
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CN104902109A
(zh)
|
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一种高效的企业内部电话交换系统
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CH293577A
(fr)
|
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Installation de télécommunication.
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JPH01128658A
(ja)
|
|
交換機の回線選択方式
|
|
JPS6367096A
(ja)
|
|
構内電話交換機
|
|
BE469508A
(enrdf_load_stackoverflow)
|
|
|
|
BE464330A
(enrdf_load_stackoverflow)
|
|
|
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BE483085A
(enrdf_load_stackoverflow)
|
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