VISM_DS - Voice Interworking Service Module DATA SHEET...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Voice Interworking Service Module D ATA S HEET Voice Interworking Service Module THE VOICE INTERWORKING SERVICE MODULE (VISM) IS A HIGH-PERFORMANCE VOICE MODULE FOR THE CISCO MGX 8250 AND MGX 8800 SERIES WIDE-AREA IP+ATM SWITCHES AND IS DESIGNED WITH INDUSTRY-LEADING STATE-OF-THE-ART TECHNOLOGY .SUITABLE FOR ALL SERVICE PROVIDER VOICE APPLICATIONS, THE VISM OFFERS STANDARDS-BASED SUPPORT FOR VOICE OVER ATM AND VOICE OVER IP. The VISM provides toll-quality voice through echo cancellation and efficient utilization of wide-area bandwidth through voice-compression and silence-suppression techniques. Key Features Superior Performance The VISM uses high performance digital signal processors and dual control processors with advanced software to provide a fully nonblocking architecture that supports the following functions: • Eight T1 and E1 interfaces per service module, up to 24 service modules per MGX 8800 • Supports a wide variety of compression schemes and silence suppression for efficient bandwidth utilization • Programmable echo cancellation up to 128 msec • ATM SVCs with standards based PNNI for VoATM using AAL1 • VoIP, VoATM support • ATM adaption layer 1 (AAL1), AAL2, and AAL5 standards support • PRI interfaces • Fax and modem tone detection for compression and echo cancellation control • Statistics collection • Standards-based alarm and fault management • Simple Network Management Protocol (SNMP) configuration and access • Redundancy with standby switchover Voice Compression The VISM supports the following standards-based voice coding schemes: • ADPCM (G.726) • CS-ACELP (G.729a) Support for a range of compression allows customers to select the compression quality and bandwidth savings appropriate for their applications; 32-kbps ADPCM, and 8-kbps CS-ACELP compression provide very high-quality and low-bit-rate voice, while reducing total bandwidth requirements.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/08/2011 for the course CISCO 1232 taught by Professor Jack during the Spring '11 term at American International.

Page1 / 3

VISM_DS - Voice Interworking Service Module DATA SHEET...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online