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2.8 PSTN Group Config

2.8.1 E1/T1 Parameter

Clock source of E1/T1can be selected “Remote” or “Local”. If selecting E1/T1 port to port0, when

user modified port0, port0-3 will be changed together with port0. Port4-7 changed following the

port4.

Figure 2-8-1 E1/T1 Parameter

E1/T1 parameter description

Work Mode

E1/T1, the default is E1.

PCM Mode

PCM mode: A LAW and Mu LAW, the default is A LAW

Frame Mode

The frame modes of E1 are: DF, CRC-4, CRC4_ITU, the default is CRC-4; the frame modes

of T1 are: F12, F4, ESF, F72, the default is F4.

Line Code

Line codes of E1 are: NRZ, CMI, AMI, HDB3, the default is HDB3. The Line codes of T1 are:

NRZ, CMI, AMI, B8ZS, the default is B8ZS.

Line Built Out

Cable length. E1 lines docking, the environment will affect the E1 line signal strength,

signal strength according to (DB value) to select the long-term or short-term.

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