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Voice over ATM Switched Virtual
Circuits on the Cisco MC3810
This document describes voice over Asynchronous Transfer Mode (VoATM) switched virtual
circuits (SVCs) for the Cisco MC3810 multiservice access concentrator.
This document includes the following sections:
•
Feature Overview, page 1
•
Supported Platforms, page 4
•
•
Prerequisites, page 4
•
Configuration Tasks, page 5
•
Troubleshooting Voice over ATM SVCs, page 16
•
Monitoring and Maintaining Voice over ATM SVCs, page 19
•
Configuration Examples, page 20
•
Command Reference, page 22
•
Glossary, page 30
Feature Overview
VoATM SVCs allow the Cisco MC3810 to transfer voice data dynamically and as needed-without
tying up the resources required for static, manually provisioned permanent virtual circuits (PVCs).
An SVC connection is initiated for each call, and each request includes bandwidth and
quality-of-service (QoS) information required for the connection. SVCs are ideal for networks that
are highly interconnected, where scalability is essential, and in situations where traffic is sporadic.
In addition, service providers often offer more advantageous, usage-based pricing options for SVCs.
VoATM using SVCs on the Cisco MC3810 includes all of the voice features that the Cisco MC3810
supports for PVCs and for Frame Relay transport. Like other Cisco voice implementations, VoATM
using SVCs is based on dial peers and uses ATM Adaptation Layer 5 (AAL5).
ATM SVC service operates much like X.25 SVC service, although ATM allows much higher
throughput. It requires a signaling protocol between a router or a multiservice access concentrator
and an ATM switch. The ATM signaling software provides a method of dynamically establishing,
maintaining, and clearing ATM connections at the User-Network Interface (UNI). In UNI, the router
serves as the user and the ATM switch is considered the network. The router does not perform
call-level routing. Instead, the ATM switch does the ATM call routing, and the router directs packets
through the resulting circuit.
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Related Manuals for Cisco MC3810-V - Concentrator - External
Summary of Contents for Cisco MC3810-V - Concentrator - External
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Page 1: Table Of Contents
In addition, service providers often offer more advantageous, usage-based pricing options for SVCs. VoATM using SVCs on the Cisco MC3810 includes all of the voice features that the Cisco MC3810 supports for PVCs and for Frame Relay transport. Like other Cisco voice implementations, VoATM using SVCs is based on dial peers and uses ATM Adaptation Layer 5 (AAL5). - Page 2 24 simultaneous voice calls per Cisco MC3810 system • Support for tandem switching The Cisco MC3810, in addition to supporting video and voice over ATM SVCs, also supports Note data over ATM SVCs. Wide-Area Networking Configuration Guide and Wide-Area Networking Command Reference provide more information about the commands and configuration steps required for this capability.
- Page 3 ATM layer Related Features and Technologies The Cisco MC3810 also supports data over ATM SVCs. Wide-Area Networking Configuration Guide and Wide-Area Networking Command Reference provide more information about the commands and configuration steps required for this capability.
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Page 4: Supported Platforms
12.0 documents: • Wide-Area Networking Configuration Guide • Wide-Area Networking Command Reference For information about IOS configuration that is unique to the Cisco MC3810, consult the following Cisco documents: • Cisco MC3810 Multiservice Access Concentrator Software Configuration Guide • Cisco MC3810 Multiservice Access Concentrator Software Command Reference Supported Platforms This feature is supported on the Cisco MC3810 multiservice access concentrator. -
Page 5: Configuration Tasks
T1 controller 0; then the clock source is distributed to the devices attached to the local Cisco MC3810 serial ports and to T1 controller 1. Base clock source decisions on the network configuration, and set up a hierarchy of clock sources, so that backup clock sources are available. - Page 6 At this point, you can also configure network Note protocol settings such as IP hosts. For more information, see the Cisco IOS Release 12.0 network protocol configuration and command reference guides. Verifying Network Clocks and Controller Settings To verify the configuration of network clock sources and controller settings, follow the steps below.
- Page 7 In this section, the ATM interface is set up, including PVCs to carry signaling for SVCs. In addition, an NSAP address for an ATM SVC is specified. For additional information, see Cisco MC3810 Multiservice Access Concentrator Software Configuration Guide and Cisco MC3810 Multiservice Access Concentrator Software Command Reference.
- Page 8 To enable the signaling for setup and tear-down of SVCs, specify the Q.SAAL (Signaling ATM Adaptation Layer) encapsulation; the associated vpi and vci values are ordinarily 0 and 5, respectively. You cannot create this PVC on a subinterface. Exit PVC interface configuration mode. #Router(config-if-atm-pvc)# exit Cisco IOS Release 12.0(7)T...
- Page 9 OAM frequency: 0 second(s), OAM retry frequency: 1 second(s) OAM up retry count: 3, OAM down retry count: 5 OAM Loopback status: OAM Disabled OAM VC state: Not Managed ILMI VC state: Not Managed InARP DISABLED Voice over ATM Switched Virtual Circuits on the Cisco MC3810 9...
- Page 10 F5 InEndloop: 0, F5 InSegloop: 0, F5 InAIS: 0, F5 InRDI: 0 F4 InEndloop: 0, F4 InSegloop: 0, F4 InAIS: 0, F4 InRDI: 0 OAM cells sent: 0 F5 OutEndloop: 0, F5 OutSegloop: 0, F5 OutRDI: 0 F4 OutEndloop: 0, F4 OutSegloop: 0, F4 OutRDI: 0 Cisco IOS Release 12.0(7)T...
- Page 11 ILMI status is confirmed—the ILMI PVC is set up to allow SVC management: Router# show atm video-voice address nsap address type ilmi status 47.0091810000000002F26D4901.00107B4832E1.FE VOICE_AAL5 Confirmed 47.0091810000000002F26D4901.00107B4832E1.C8 VIDEO_AAL1 Confirmed Voice over ATM Switched Virtual Circuits on the Cisco MC3810 11...
- Page 12 Specify a voice port and enter voice-port configuration Router(config)# voice-port port/slot mode. port specifies the slot number on the Cisco MC3810. If the analog voice module (AVM) or the digital voice module (DVM) is installed, the slot number is 1. If the multiflex trunk (MFT) is installed, the slot number is 0.
- Page 13 Type of VoicePort is E&M Operation State is UP Administrative State is UP No Interface Down Failure Description is not set Noise Regeneration is enabled Non Linear Processing is enabled Voice over ATM Switched Virtual Circuits on the Cisco MC3810 13...
- Page 14 Delay Duration Timing is set to 140 ms Dial Pulse Min. Delay is set to 140 ms Auto Cut-through is disabled Percent Break of Pulse is 61 percent Dialout Delay for immediate start is 300 ms Cisco IOS Release 12.0(7)T...
- Page 15 Successful Calls = 0, Failed Calls = 0, Accepted Calls = 0, Refused Calls = 0, Last Disconnect Cause is "", Last Disconnect Text is "", Last Setup Time = 0. Matched: 5558809 Digits: 7 Target: Voice over ATM Switched Virtual Circuits on the Cisco MC3810 15...
- Page 16 When problems occur with voice over ATM SVCs, follow the steps below to look first for simpler problems before progressing to more complex possible issues. For general information about troubleshooting and voice QoS, see Cisco IOS Release 12.0 Voice, Video, and Home Applications Configuration Guide. Please see if any additional steps should be mentioned here.
- Page 17 If you need to make changes, see the Cisco IOS Release 12.0 documents, Wide-Area Networking Configuration Guide and Wide-Area Networking Command Reference.
- Page 18 Media=ATM, LowerIfName=ATM0, VPI=0, VCI=299 CalledNumber=5559808 SetupTime=47995483 x 10ms ConnectTime=47995671 x 10ms DisconectTime=48025867 x 10ms DisconnectText=remote onhook ConnectionId=[0x9CE20881 0x224855C2 0x0 0x1C9B84CB] Media=TELE, TxDuration= 301950 ms CallingNumber=5558803 SetupTime=47995412 x 10ms ConnectTime=47995682 x 10ms DisconectTime=48025877 x 10ms DisconnectText=local onhook Cisco IOS Release 12.0(7)T...
- Page 19 Router# show voice port Router# show voice dial-peer Displays information about configured voice dial peers. Displays detailed information about calls in progress and Router# show call history voice record recent calls. Voice over ATM Switched Virtual Circuits on the Cisco MC3810 19...
- Page 20 Configuration Examples This example shows the configurations of two Cisco MC3810 multiservice access concentrators that each have voice dial peers connecting over ATM SVCs. For additional information, see the Cisco MC3810 Multiservice Access Concentrator Software Configuration Guide and the Cisco MC3810 Multiservice Access Concentrator Software Command Reference.
- Page 21 5559805 port 1/5 port 1/5 dial-peer voice 102 voatm dial-peer voice 202 voatm destination-pattern 5559... destination-pattern 5558... session target ATM0 svc nsap session target ATM0 svc nsap 47.0091810000000002F26D4901.00107B09C645.FE 47.0091810000000002F26D4901.00107B4832E1.FE Voice over ATM Switched Virtual Circuits on the Cisco MC3810 21...
- Page 22 • show atm video-voice address In Cisco IOS Release 12.0(1)T or later, you can search and filter the output for show and more commands. This functionality is useful when you need to sort through large amounts of output, or if you want to exclude output that you do not need to see.
- Page 23 Enable scrambling on E1 links only. On T1 links, the default B8ZS line encoding normally ensures sufficient reliability. The scrambling setting must match that of the far end. Example On a Cisco MC3810, the following example shows how to set the ATM0 E1 link to scramble payload: interface atm0 atm scramble-enable...
- Page 24 On a Cisco MC3810, the following example shows the ATM interface NSAP address set automatically: interface atm0 atm video aesa default On a Cisco MC3810, the following example shows the ATM interface NSAP address set to a specific ESI value: interface atm0/1 atm video aesa 444444444444...
- Page 25 Related Command Command Description show atm video-voice address Allows you to review the address assigned to an ATM interface. Voice over ATM Switched Virtual Circuits on the Cisco MC3810 25...
- Page 26 DTR to drop, which might cause communications device to disconnect. Example On Cisco MC3810 interface Serial 0, this example shows the restart delay set to 1 second: interface Serial0 serial restart-delay 1...
- Page 27 {svc nsap nsap-address | pvc {name | vpi/vci | vci} no session target Syntax Description interface Specifies the ATM interface number on the Cisco MC3810. The only valid number is 0. nsap-address For SVC communications, a 40-digit hexadecimal number for the session...
- Page 28 555 session target ATM0 svc nsap 47.0091810000000002F26D4901.444444444444.01 Related Commands Command Description dial-peer voice Sets up a voice dial peer for a local or remote dial peer. show dial-peer voice Displays details about configured voice dial peers. Cisco IOS Release 12.0(7)T...
- Page 29 ATM management is confirmed for those addresses. Example On a Cisco MC3810, the following example shows how to see information about ATM interface NSAP addresses: router# show atm video-voice address...
- Page 30 NM—Network module POTS—Plain Old Telephone Service. Basic telephone service supplying standard single-line telephones, telephone lines, and access to the public switched telephone network. Cisco IOS Release 12.0(7)T...
- Page 31 ATM switches use the VPI/VCI fields to identify the next VCL that a cell needs to transit on its way to its final destination. Voice over ATM Switched Virtual Circuits on the Cisco MC3810 31...