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信令网关,媒体网关在SOFTSWITCH结构中位于接入层。...
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现有通信网扩建、改建的()应满足现有网络的技术指标和管理要求,与现有通信网技术体制、软件版本保持,并纳入统一网管管理。A、设备选型B、设备配置C、设备接口D、设备可靠性E、设备性能...
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