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    • 2. 发明公开
    • Systems and methods of timing DTMF tones for telephony control
    • Systeme und Verfahren zur Synchronisierung von DTMF-Tönenzur Telefondienststeuerung
    • EP2381668A2
    • 2011-10-26
    • EP10190012.4
    • 2010-11-04
    • Research In Motion Limited
    • Yin, HaiyangKramarenko, Valentina Iqorevna
    • H04M3/42H04M7/00
    • H04M3/4234H04L1/188
    • Control and status information between a mobile device and another device can be signaled over a voice channel using DTMF tones, e.g., a pre-defined sequence of DTMF tones can signal a desired message (more generally, a feature code). Tones sent are separated from each other by a time gap (T gap timer). If a receiving device does not receive a sequence of DTMF tones that can be matched to stored definitions of feature codes, then the receiving device generates a negative ACK. Also, if the sending device does not receive either negative or positive ACK, then sending device resends all tones of the feature code after a retry delay (T retry timer). Rather than having the T retry timer start when tones for a feature code start to be transmitted, the T retry timer is started after the T gap timer expires for the last tone of a feature code. Thus, only one timer is running (either T gap or T retry ), rather than having multiple timers running concurrently. Race conditions between the timers are avoided.
    • 移动设备与另一设备之间的控制和状态信息可以使用DTMF音调通过语音信道发信号通知,例如,预定义的DTMF音调序列可以发信号通知期望的消息(更一般地,特征码)。 发送的音调通过时间间隔(T gap timer)彼此分离。 如果接收设备没有接收到可以与存储的特征码的定义相匹配的DTMF音调序列,则接收设备产生否定的ACK。 此外,如果发送设备没有接收到肯定ACK,则发送设备在重试延迟(T重试定时器)之后重新发送特征码的所有音调。 而不是在特征码的音调开始发送的情况下开始T重试定时器,所以在特征码的最后一个音调的T间隔定时器期满之后,T重试定时器被启动。 因此,只有一个定时器正在运行(T间隙或T重试),而不是同时运行多个定时器。 避免计时器之间的竞争条件。
    • 3. 发明公开
    • System and method for detecting and processing stale messages
    • 系统与Verfahren zur Erkennung und Verarbeitung von alten Mitteilungen
    • EP2348688A1
    • 2011-07-27
    • EP11151719.9
    • 2011-01-21
    • Research In Motion Limited
    • Shatsky, AlexanderYin, Haiyang
    • H04L29/06
    • H04L65/1006H04L65/80H04L69/03H04L69/28
    • A system and method for handling stale messages is presented. A first message is transmitted to a peer entity. The first message includes a first timestamp. A second message is received from the peer entity. The second message is related to the first message and includes a second timestamp. A third message is received from the peer entity. The third message includes a third timestamp. A staleness of the third message is determined using the first timestamp, second timestamp, and third timestamp. When the third message is stale, the third message is at least one of ignored and discarded. When the third message is not stale, the third message may be processed.
    • 介绍了处理陈旧信息的系统和方法。 第一个消息被发送到对等实体。 第一条消息包含第一个时间戳。 从对等实体接收到第二个消息。 第二个消息与第一个消息相关,并包含第二个时间戳。 从对等实体接收到第三条消息。 第三条消息包含第三个时间戳。 使用第一时间戳,第二时间戳和第三时间戳来确定第三消息的陈旧。 当第三个消息过时时,第三个消息至少被忽略和丢弃。 当第三条消息不过时时,可能会处理第三条消息。
    • 8. 发明公开
    • Expedited media interconnection in third party call control
    • 在呼叫控制加速媒体连接到第三个实例
    • EP2348698A1
    • 2011-07-27
    • EP10151593.0
    • 2010-01-25
    • RESEARCH IN MOTION LIMITED
    • Kramarenko, Valentina IqorevnaGeorge, Richard JohnYin, Haiyang
    • H04M3/42H04M7/12H04L29/08
    • H04M3/4234H04L65/1006H04L65/1053H04L65/1069H04L65/403H04M7/1225H04M2207/18H04M2207/20
    • Third party call control in a service management platform (SMP) of an enterprise system comprising a private branch exchange (PBX) in communication with the SMP over a trunk and line. Receiving a request over the line for communication involving a device. Invoking reliable transmission of provisional responses in the trunk. Receiving a receive only session description over the trunk. Invoking specific event notification between the SMP and PBX for calls answered between the device and PBX. Receiving notification of a call answered between the device and PBX. Responding to the request with the first session description as a send/receive offer. Receiving acknowledgement including a second send/receive answer session description over the line. Updating the trunk the second description as a send/receive update. Receiving a third session description with a successful response message from the PBX; the third session description being a send and receive copy of the first session description.
    • 在企业系统,包括通讯在躯干和线专用分组交换机(PBX)与SMP的服务管理平台(SMP)第三方呼叫控制。 接收通过通信涉及的装置的线路的请求。 调用在主干临时响应的可靠传输。 接收接收通过中继唯一会话描述。 调用SMP和PBX的设备和PBX之间应答的电话之间的特定事件通知。 呼叫接收通知的设备和PBX之间的回答。 响应与第一会话描述的请求发送/接收的报价。 接收确认包括第二发送/接收过线了答案会话描述。 更新所述躯干的第二描述作为发送/接收更新。 接收与从PBX成功响应消息的第三会话描述; 第三会话描述是一个发送和接收的第一会话描述的副本。