Analog and Digital Voice System

Analog Systems:

   When we thing of voice systems the very first thing that comes into our mind is a home phone. Like our home phones our old telephony systems used to operate in analog mode. It has two cables Ring and Tip and it operates on -48 DC voltage. When the circuit between the two gets complete it withdraws a dial tone from the central office. The voice waveform of these kind of calls are analog waveform.

CSS Line Device Approach: Path Selection

CSS Line Device Approach: Path Selection

Hi All,

  In the previous post I explained how Line Device CSS approach works, but I also mentioned:

• ·        The Device CSS decides through which gateway/trunk call will go out of our network.
• ·        Line CSS defines (Class of Service) calling privileges.

In this post we will try to understand how device CSS helps us to select the right gateway. Although Cisco has introduced a concept of local gateway, but we will discuss that in a different post.

CSS Line Device Approach

CSS Line Device Approach

Hi All,

  As we start understanding CSS and partitions next confusion we normally have is what is Line and Device CSS. There is a very simple definition of CSS Line/Device Approach

• ·        The Device CSS decides through which gateway/trunk call will go out of our network.
• ·        Line CSS defines (Class of Service) calling privileges.

CSS & Partition

 

Hi All,

  The most basic and complicated topic in CUCM dial-plan is CSS &Partition. When I look at this topic I compare it with Lock (partition) and Key (CSS) and Route Pattern or a DN as a door. Assume CSS as a key chain with different keys as partition.