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DPNSS/QSIG Transparency Options Configuration
Preemptive Call Forwarding
Depending on whether the Q.931 implementation to which the Cisco VG30D Voice Gateway is
interfaced fully supports overlap signalling, you may need to configure the En-bloc Call Forward
Timeout and/or En-bloc Call Forward Digit Count parameters in the DPNSS stacks.
The converter uses these call forwarding parameters when overlap signalling is encountered from
DPNSS to Q.931. The converter uses these parameters to recognise when no more digits are forthcoming
and to indicate address completion and speed call setup. You should include any edited-out digits in the
count of address digits after which the call must get forwarded. They are not normally required when
you are interfacing into a public network because the network preempts such contrivances.
In both cases, a value 0 turns the address-phase termination function off. The En-bloc Call Forward
Timeout represents an interdigit timer.
You do not need this feature for transparent signalling.
DPNSS/QSIG Transparency Options Configuration
Transparent operation between Cisco VG30D Voice Gateway systems across a QSIG or DPNSS network
does get supported.
Caution
Never use this feature in conjunction with Cisco Unified Communications Manager.
QSIG Transparency Through a DPNSS Network
To configure the Cisco VG30D Voice Gateway to enable QSIG Transparency through a DPNSS network,
in the Gateway Management Interface, perform the following procedure:
Step 1
Go to Configuration / DPNSS Services.
Step 2
Enable Virtual Calls by checking the box.
Enable Data Calls by checking the box and click SUBMIT.
Step 3
Go to Configuration / DPNSS Advanced.
Step 4
Set Transparent Transport Service Support to Carry and click SUBMIT.
Step 5
Go to Configuration / Q.931 Services.
Step 6
Set Transparent Transport Service Support to Generate and click SUBMIT.
Step 7
DPNSS Transparency Through a QSIG Network
To configure the Cisco VG30D Voice Gateway to enable DPNSS Transparency through a QSIG network,
in the Gateway Management Interface, perform the following procedure:
Go to Configuration / Q.931 Advanced.
Step 1
Set Layer 3 protocol Profile to QSIG and click SUBMIT.
Step 2
Cisco VG30D Voice Gateway User Guide
6-4
Chapter 6
Conversions and Transparency
OL-19276-01
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