
VIP-2100 User’s manual - 56 -
Figure 7.3-1
Basic Parameter Description:
• Interface ID: System parameter
• Trunk ID: System parameter
• Trunk Type: T1or E1 selection
• Description: Description for this trunk ID
• Termin Side: Network site or User Site (normally, you set to “user site”
when connect to switch)
o User Side
o Network Side
• Trunk Mode: Trunk operation mode
o Disable: Disable the trunk
o Normal: Accept PSTN and VoIP calls
o PSTN incoming only: Allow the PSTN incoming calls only
o H.323 incoming only: Allow the H.323 incoming calls only
• Hunting Method: PSTN trunk hunting method for available channel
o Random: Hunt randomly
o Cyclic: Initial hunt (after power-up/reboot) begins with B channel 1;
subsequent hunts begin with position following last successfully
allocated resource
o Rotary: Hunt always begins with B channel 1
o Reverser Rotary: Hunt always begins with B channel 31
o Reverser Cyclic: Initial hunt (after power-up/reboot) begins with B
channel 31, follows next available channel in reverser order
• CAS Variance: CAS counting variance
• Framing Method:
o For T1
- super frame
- 4-frame multi-frame
- 12 frame multi-frame (D4)
- extend super frame without CRC6
- extend super frame with CRC6
- 72-Frame Multi-Frame
o For E1:
- Automatic CRC4 or Double Frame selection
- Double Frame Format
- CRC4 multi-frame
- CRC4 extend multi-frame
• Protocol Tag: supported protocol on T1/E1 interface with PSTN switch
o For T1:
- T1 CAS
- T1 RAW CAS
- T1 NI2 ISDN
- T1 4ESS ISDN
- T1 5ESS 9 ISDN
- T1 5ESS 10 ISDN
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