Providing telephony services using proxies
Providing telephony services using proxies
Provision of IVR resources in BICC networks
Provision of IVR resources in BICC networks
Provision of telephony caller ID service via common instant...
Proxy modem for voice over internet protocol based...
Proxy server for relaying VOIP messages
Proxy VAT-PSTN origination
PSTN call routing control features applied to a VoIP
PSTN fallback using dial on demand routing scheme
PSTN fallback using dial on demand routing scheme
PSTN-internet notification services
Public IP transport network
Public IP transport network
Public switched broadband network
Public wireless/cordless internet gateway
Public wireless/cordless internet gateway
Public wireless/cordless internet gateway
Public wireless/cordless internet gateway
Publicly-switched telephone network signaling at a media...