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What is the difference between in channel and common channel signaling?
Wiki User
∙ 14y ago
- One signaling path needed per trunk group
- Faster and simpler to transfer information between control processors
- No possibility of interference with speech path
- Signaling can't be accessed by customer.
- Value-added services of a signaling control point
- Shared processing for small offices
- Allows centralized decision making (flow mgmt)
- Permits Advanced Intelligent Network (AIN) services
Wiki User
∙ 9y ago
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What is common channel signaling system 7?
Signaling system 7 is an international system used to communicate between telephone offices and other telecom systems. It conveys information about the status of each end of the call to the other. For example, it detects when the remote instrument is being rung and signals the originating office to play a "ringing" signal to the originating unit. It is also used for informing each end that the call has been answered and that it has been disconnected (later), which information is often critical for proper billing and for freeing up circuits that are no longer being used.
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What are the disadvantages of common channel signaling?
•CCS links can be a single point of failure •No inherent testing of speech path by call setup signaling •CCS response time is critical
What is In- channel signaling?
In-channel signaling is also often referred to as in-band signaling. See http://en.wikipedia.org/wiki/Signalling_(telecommunications)#In-Band_versus_Out-Of-Band and http://en.wikipedia.org/wiki/In-band_signaling.The signaling used to establish and tear down a phone call was located in the same physical communication channel used to carry the call (i.e voice, fax or modem) traffic, and used DTMF tones. Examples are CCITT Signaling Systems 1-5 R1 & R2. Most books on SS7 should talk briefly about this.SS6 & SS7 moved to take the signaling out-of band, and to establish a common channel for all signaling in digital packet-based format (non-tone based) allowing one signaling channel to control a large number of "voice" circuits.
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What do synaptic signaling and paracrine signaling have in common?
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If that's greatest common factor and greatest common divisor, there is no difference between them.
