DSB Direct Satellite Broadcast 直接卫星广播 DSB Double SideBand 双边带 DSBRC Double SideBand Reduced Carrier 双边带减幅载波 DSBSC Double SideBand Suppressed Carrier 双边带抑制载波
彩铃 polyphonic ringtone 和弦铃声 chord music ringtone 蓝牙技术(无线耳机接听)bluetooth 对讲机 Walkie-Talkie 全球定位系统 GPS (Global Positioning System) 高保真 high
primary digital group 数 字 基 群 POS SDH上的分组协议 PVC 永久虚电路 PUNI 专用网UNI PT 净荷类型 PNNI 专用网NNI PTN 个人通信号码 PCS 个人通信业务 PCN 个人通信网
PBX 专用小交换机 PBS 个性化基本服务 PBGA 锡球格状阵列式塑料组装技术 PAGC 全球移动通信系统分机用专用自动小交换机接入 PAD 分组组装拆装,包组装拆装
补充: E-1 - The European equivalent of a T-1. E911 Taxes/Surcharges - This tax is set and imposed by local governments to help pay for the cost of an emergency response communications system that
D type Channel Bank A D type channel bank is channel termination equipment used for combining (multiplexing) individual analog channel signals on a time division basis. D type channel banks provide in
DCE data circuit terminating equipment DCP digital communications protocol DCS digital cross-connect system DDD direct distance dialing DDN Defense Data Network Digit L Digital L is another amplitude
Direct Inward Dialing (DID) DID is PBX-to-central office trunks that allow incoming calls to a PBX to ring specific stations without attendant assistance. DID greatly reduces the number of required co
Earth Station - The term used to describe the combination of antenna, low-noise amplifier (LNA), down-converter, and receiver electronics that are used to receive a signal transmitted by a satellite.
Email - This is electronic-mail, that is text messages that are sent over the internet. Emoticons - This is a contraction meaning emotional icon that is made with common characters, such as :-) being
Ground - Connecting the Earth to electrical equipment with a conductor. This is done so current overloads (perhaps due to a lightning strike) can be safely diverted to the Earth. Ground Fault Circuit
Gain - This is an increase in signal power, due to a boost from an electronic device. Garbage - These are unwanted characters that appear because of either incorrect settings or noise. Gate - These ar
Frame In time division multiplexing systems, Frame is a sequence of time slots each containing a sample from one of the channels carried by the system. The frame is repeated at regular intervals, (nor
补充: FAQ - An acronym for Frequently Asked Questions. FAQs are online documents that list and answer the most common questions on a particular subject. Federal Excise Tax - A 3% tax mandated by t
Focal Length - Distance from the exact center of the dish to the center of the feed. Focal Point - The physical point in space toward which the satellite reflector dish directs the received signal so
Fade - This is a reduction in the received signal. It is caused by absorption, refraction, or reflection. Fax - This is a shortening of Facsimile, and it refers to one fax machine sending a digital re
EMI electromagnetic interference; also, exchange message interface End Office (EO) EO is a LEC (BOC or an ITC) switching system within a LATA where local loops to customer stations are terminated for
补充: Gateway - A system that translates incompatible networks or applications. Gateway is also commonly used to refer to any system that provides access to another system. GMSS - General Manager,