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TRANSCRIPT
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2008 Cisco Systems, Inc. All rights reserved. CVOICE v6.02-1
Configuring Voice Ports
UnderstandingQSIG
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QSIG Overview
Q Signaling protocol
ISDN-based signaling protocol
Based on Q.931
Allows feature transparency between different vendor PBXsTwo layers:
Basic call defines the signaling procedures and protocol for thepurpose of circuit-switched call control at the Q reference pointbetween PINXs. Explained in Standard ECMA-143.
Generic function defines the signaling protocol for the controlof supplementary services and additional network features.Explained in Standard ECMA-165.
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QSIG Features
Basic call
Call completion
Call diversion
Call transfer Identification services
Message waiting indication service
Path replacement
Do not disturb and override
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Cluster A asks Cluster Cvia Cluster B for path
replacement to DN 1000.
User B
DN: 2000
Path Replacement (Cont.)
Cluster C establishesa new circuit to A.
Cluster A andCluster C
Switch over.
User ADN: 1000
User A calls User B.
User CDN: 3000
1
User B transfers to User C.2
4
5
6
User B drops off.3
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BRIRouter(config)# isdn switch-type basic-qsigPRIRouter(config)# isdn switch-type primary-qsigRouter(config)# card type t1 0
Voice-EnabledRouter
IP Network
PBX Voice-EnabledRouter PhonePBX
QSIGT1/E1 or BRI Channel
QSIGT1/E1 or BRI Channel
Configuring Global QSIG Support for BRIor PRI Example
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QSIG over PRI Interface ConfigurationExample
Voice-EnabledRouter
IP Network
PBX Voice-EnabledRouter PhonePBX
QSIGT1/E1 Channel
QSIGT1/E1 Channel
Router(config)# controller t1 0/1Router(config-controller)# pri-group timeslots 1-24Router(config)# interface serial 0/1:23Router(config-if)# isdn switch-type primary-qsigRouter(config-if)# isdn protocol-emulate user OR Router(config-if)# isdn protocol-emulate network
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QSIG over BRI Configuration Example
Voice-EnabledRouter
IP Network
PBX Voice-EnabledRouter PhonePBX
QSIGBRI Channel
QSIGBRI Channel
Router(config)# interface bri 1/1Router(config-if)# isdn layer1-emulate user OR Router(config-if)# isdn layer1-emulate networkRouter(config-if)# isdn incoming-voice voiceRouter(config-if)# isdn protocol-emulate user OR Router(config-if)# isdn protocol-emulate network
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Verifying Controllers
router# show controllers t1 0/1/0T1 0/1/0 is up.
Applique type is Channelized T1Cablelength is long gain36 0db
No alarms detected.alarm-trigger is not setSoaking time: 3, Clearance time: 10AIS State:Clear LOS State:Clear LOF State:ClearVersion info Firmware: 20051006, FPGA: 20, spm_count = 0Framing is ESF, Line Code is B8ZS, Clock Source is Line.CRC Threshold is 320. Reported from firmware is 320.Data in current interval (601 seconds elapsed):
2 Line Code Violations, 3 Path Code Violations601 Slip Secs, 0 Fr Loss Secs, 2 Line Err Secs, 1 Degraded Mins601 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
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debug isdn q921
router#
Displays ISDN Q.921 (Layer 2) debug information
debug isdn q931
router#
Displays information about call setup and teardown of Layer 3 ISDN
network connections between the local (user-side) router and thenetwork
Debugging QSIG Trunks
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Summary
QSIG allows feature transparency between differentvendor PBXs.
QSIG can be configured over PRI or BRI.
Various show and debug commands are available to verify theQSIG connection.
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