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voice quality. Set to 12 will have long voice delay but with better voice
quality
EC Tail Length: Echo Cancellation Length, default value is 25ms
Silence Compress: Enable silence compress or not
TDM Bus Clock: TDM Bus clock source
o Internal: derived from internal oscillator
o External: derived from external PSTN E1/T1 clock
Dial Plan Configuration
Dial Plan can be used to assign the ISDN number plan based on prefix
setting.
Start Path: Configuration→Interface→Dial Plan
Basic Parameter Description:
Prefix: Called party number prefix
Src Num Plan: ISDN Source number plan
Src Num Type: ISDN Source number type
Dest Num Plan: ISDN destination number plan
Dest Num Type: ISDN destination number type
ApplyTo: Trunks apply to
T1/E1 Trunk Configuration
Start Path: Configuration→Interface→Trunk
VIP-2100 User's manual
Figure 7.3-1
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