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VC and VP Address
Translation
Phone # (RS-366 templates only) — The destination phone number for the
video-associated virtual circuit. You are prompted for this parameter only if you
have set Mode to Dial. When you enter this number, the system runs a duplication
check against the destination phone numbers that have already been entered. No
calling plan is enforced, and the length of the destination phone numbers you
enter for different virtual circuits can vary. When the destination phone number is
dialed—either automatically through the RS-366 interface or manually through
the terminal or SNMP interface—the virtual circuit is activated.
Tel Channels — (T1-DSX/E1 ports only) Telco channels: the associated DS0s which
have been assigned to the specified ATM VC connection. All available DS0
channels are automatically allocated in unstructured mode. In structured mode,
the DS0 channels are bit-coded, with each bit representing one DS0 channel. You
can assign DS0 channels in structured mode only. Channel conflicts within a T1/E1
port interface will result in an error.
If you are using CAS (channel associated signaling), you must build a virtual circuit
for each DS0 you will use.
Mode — (T1-DSX/E1 ports only) The mode for the DSX-1/E1 CBR structured data
circuit:
Normal — The circuit is configured as a standard PVC circuit and does not
listen to video signals.
RS366 — The circuit is put into an active listener mode; it listens for video
signals from premises devices.
DBA — The circuit is configured to dynamically reassign the timeslot.
The Mode parameter appears only when you are configuring a virtual circuit on a
DSX-1/E1 CBR port configured for Structured Data.
Voice Compression Module Virtual Circuit Parameters
If you are configuring a VCM VCC circuit, you simply set the common Shaper
Number, Priority, and Early Packet Discard parameters. If you are configuring a
VCM Subchannel circuit, you must also set the DLCI, DS0 Channel, and
Subchannel ID (SCID). For descriptions of the VCM Subchannel circuit parameters,
see "Adding VCM Subchannel Circuits" earlier in this chapter.
The PathBuilder S330/S310 switch supports VC and VP address translation on the
receive VPI/VCI end of a circuit.
To configure VP address translation, set the receive VCI to * when you enter
the circuit address in the Add Virtual Circuit menu. This rule applies for all valid
values of VPI (0 to 255).
To configure VC address translation, set the VPI in the range 0 to 3, and set the
VCI to a value other than x.
The PathBuilder S330/S310 software automatically sets the VCI to 0 whenever you
select a VPI greater than 3 for the receive VPI, indicating that for values greater
than 3 for the receive VPI, the PathBuilder S330/S310 switch can build only VP
address-translated circuits. This is relevant only for the receive VPI/VCI end of the
circuit.
Configuring Virtual Circuits
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