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Linksys SPA921 Cisco SPA9000 Voice System Web-UI Based Product Installation an - Page 36

System Design Considerations, Bandwidth Requirements and Call Capacity

UPC - 745883570799

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Preparation System Design Considerations 3 System Design Considerations When installing and configuring the SPA9000 Voice System, it is necessary to analyze and meet some design considerations to ensure the best quality and user experience. The design considerations cover available bandwidth and quality of service. Bandwidth Requirements and Call Capacity The available connection bandwidth determines the maximum number of simultaneous calls that the system can support with the appropriate audio quality. Before installing and configuring the Cisco SPA devices, use this information to determine the maximum number of simultaneous VoIP connections that the system can support. For asymmetric connections, such as ADSL, the maximum number of calls is determined by the upstream bandwidth. In general it is a good practice to use no more than 75% of the total available bandwidth for calls. This provides space for data traffic and helps ensure good voice quality. NOTE Some ITSP SIP trunk services limit the maximum number of simultaneous calls. Please check with your Service Provider to understand the maximum number of simultaneous calls each SIP trunk supports. The following table provides the approximate bandwidth budget for different codecs. Codec G.711 G.72640 G.72632 G.72624 Approximate bandwidth budget for each side of conversation 110 kbps 87 kbps 79 kbps 71 kbps 2 calls 220 kbps 174 kbps 158 kbps 142 kbps 4 calls 440 kbps 348 kbps 316 kbps 284 kbps 6 calls 660 kbps 522 kbps 474 kbps 426 kbps 8 calls 880 kbps 696 kbps 632 kbps 568 kbps SPA9000 Voice System Installation and Configuration Guide for Web UI 34

Section	Page
About This Document	8
Purpose	8
Audience	9
Firmware	9
Organization	10
Document Conventions	11
Finding Information in PDF Files	12
Finding Text in a PDF	12
Finding Text in Multiple PDF Files	13
Getting Started	15
Introduction to the SPA9000 Voice System	15
SPA9000 IP PBX	16
SPA400 SIP-PSTN Gateway and Voicemail Server	17
IP Phones and Accessories	17
Deployment Scenarios	17
PSTN Access and Local Voice Mail	18
ITSP Service Only	19
ITSP Service, PSTN Access and Local Voice Mail	20
ITSP Service, PSTN and ISDN Access and Local Voice Mail	21
Introducing Components of the SPA9000 Voice System	22
Getting to Know Your SPA9000	22
Getting to Know Your SPA400	24
Getting to Know Your IP Phones and Accessories	26
Getting to Know Your WRV200 Router	28
Getting to Know the SLM224P Switch	30
Installation and Configuration Process Overview	33
A. Preparation	33
B. Connecting the Equipment	33
C. Configuring Voice Services	33
D. Configuring Advanced Features	34
E. Localizing the System	34
Preparation	35
Site Survey	35
System Design Considerations	36
Bandwidth Requirements and Call Capacity	36
Wide Area Network (WAN) Quality of Service	37
Network Setup Review	38
Infrastructure, Cabling and PSTN/ISDN Lines	38
NAT Mapping	39
Quality of Service	40
Local Area Network Design	40
Services and Equipment	41
Basic Services and Equipment	41
Cisco Equipment and Services	41
Downloading Firmware	42
Connecting the Equipment	43
Connecting and Configuring the Switch	43
Connecting the Switch to the Router	44
Configuring the Switch	45
Installing the SPA9000	48
Connecting the SPA9000	49
Upgrading the Firmware for the SPA9000	50
Setting Up the WAN Connection for the SPA9000	53
Installing the IP Phones	55
Connecting an IP Phone to the Switch	56
Performing a Factory Reset	57
Connecting Optional Devices	57
Upgrading the Firmware for the IP Phones	58
Installing the SPA400	60
Connecting the SPA400 to the Switch	61
Configuring the SPA400 Network Connection	63
Upgrading the Firmware for the SPA400	65
Configuring Phone Service and Voice Mail	67
Configuring the SPA9000	68
Configuring General Settings for SPA9000	68
Configuring Internet Phone Service (ITSP) on the SPA9000	70
Configuring SPA9000 Connectivity with the SPA400 for PSTN and Voice Mail Service	72
Configuring SPA9000 Connectivity for PSTN Access Only	76
Configuring the SPA400	78
Configuring the SPA400 Network Connection	78
Configuring the SPA400 to Communicate with the SPA9000	80
Configuring the Voice Mail Server and Voice Mail Users	84
Setting Up Each Station	87
Enabling Remote Voice Mail Access (Optional)	90
Configuring Third-Party ISDN Gateways (Optional)	92
Outbound Call Routing	92
Configuring Steering Digits	93
Typical Outbound Call Routing Examples	95
Configuring Inbound Call Routing	97
Routing Calls to the Auto Attendant (Default)	97
Routing Calls to a Receptionist, Extension, or Hunt Group	98
Using Direct Inward Dialing to Phone Extensions	100
Configuring Special Features	103
Using the Internal Music Source for Music On Hold	103
Configuring the SPA932 Sidecar to Work with the SPA9000	105
Managing Inbound Calls with Hunt Groups	111
Syntax for Hunt Rules	112
Examples for Hunt Rules	113
Creating a Hunt Rule	115
Managing Inbound Calls with Shared Line Appearances	117
About Shared Line Appearances	117
Localization	121
Localizing the SPA9000 Auto Attendant Prompts	121
Local Time Configuration	124
Configuring the SPA9000 and SPA9xx Call Progress Tones	124
Localizing the SPA400 Voice Mail Prompts	130
Localizing the SPA400 Call Disconnect Tones	131
Localizing the SPA400 Caller ID Method	133
Installation Workbook	135
Troubleshooting	150
Where to Go From Here	159
Product Resources	159