Summary
This chapter discussed the configuration of various analog and digital voice ports. For example, analog voice ports, such as FXS and FXO ports, need an appropriate signaling type (that is, loop-start or ground-start) to communicate with attached equipment. E&M port configurations also need to match the configurations of the equipment connecting to the E&M ports (for example, a PBX E&M interface). This chapter also reviewed various analog port timing parameters.
Digital port configuration included parameters such as line coding and framing. Additionally, this chapter introduced how DS-0 groups logically combine multiple channels in a digital circuit (for example, a T1), thus reducing the number of required configuration steps. Several ...
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