本地电话交换机 meaning in Chinese

lte local telephone exchange

It is not recommended that using soft swtiching plus media gateway to replace the existing local and long distance telephone switching system . for those need to newly add and replace the local switching system will depend on the cost of the media gateway
不建议使用软交换加媒体网关的方式替换目前的本地和长途交换机，对于新增的和需要更换的本地电话交换机要视媒体网关的成本情况而定。
Not recommend to use soft switching plus media gateway to replace the existing local and long distance switching systems . for the newly added and need to be changed local telephone switching systems , it will up to the cost of media gateway
?不建议使用软交换加媒体网关的方式替换目前的本地和长途交换机，对于新增和需要更换的本地电话交换机要视媒体网关成本情况而定，不对pstn进行大规模根本性改造；