Cisco Systems (VISM)

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Cisco VISM Installation and Configuration Guide

Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004

Chapter4 Configuring VISM Features

Configuring Additional VISM Features

•Added support for G.726: 16, 24, 32, and 40 kbps, with packetization periods ranging from 10 to 40

•Support for VBR-rt (variable bit rate real time) and VBR-nrt (non real time) ATM traffic classes,

including traffic shaping to the relevant traffic descriptors

•Configurable VAD model parameter for traffic engineering

•In E1 applications, support for 31 DS0 per span and a total of 248 channels per card

•Tested CRTP support through RPM for voice and voice band data calls

•Verified bearer interoperability with 3810

•Switched PVCs using SGCP 1.5:

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SDP and SGCP extensions allowing xGCP call agent control of AAL2 bearers

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Support of SGCP 1.5 digit maps and error codes

•Support for card level coexistence of switched AAL2 mode (under Call Agent control) and trunked

AAL2 mode on PVCs, on an endpoint (DS0) basis

•PBX CAS event delivery to a Call Agent using SGCP 1.5:

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DTMF: Wink and ground start

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MF: Wink

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TFTP download of CAS variant state machine

•Interoperability and configuration enhancements:

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Configurable codec strings (IANA naming conventions as well as customized ones)

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Profile negotiation and configurable preference order

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Configurable voice and VBD (for example, up-speed codec) per profile

•Added support for custom profile 110 and 200 (clear channel), ITU profiles 3 and 8

•User-configurable AAL2 Silence Indicator Description (SID) for a ll pr ofiles

•Type 3 Packet Support for proxy ringback (xrbk), packet side bearer continuity check (co3/co4

COT), and midcall DTMF relay

•Connection admission control (CAC) enhancements:

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Patented CAC method factoring in VAD and subcell multiplexing savings

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Configurable VAD model parameter for traffic engineering

•Configurable AAL2 cell fill timer

•AAL2 alarm enhancements: per span, VC, and per channel (CID) conditioning

•Display, clear, and reset AAL2 performance related counters

•In E1 AAL2 trunking applications, support for 31 DS0 per span and a total of 248 chann els per card

•Verified bearer interoperability with 3810 and third-party vendors

•Infrastructure work and enhanced support for three operatin g mod es: VoIP switching, AAL2

trunking, and switched AAL2 PVC

•Graceful upgrade VISM 2.0 and 2.0(1) to VISM 2.1(0)

•The ability to enable or disable the call agent protocol SDP OST feature in the event the peer

gateway may or may not support SDP OST. This feature allows interoperability with the Cisco

AS5300 Universal Access Server and other equipment