Specifications

© Copyright IBM Corp. 2000 55
Chapter 4. Sample Scenarios
This chapter provides an overview of some basic VoFR scenarios that have been
tested and used to teach networking specialists and business partners how to
configure 9783 and 2212s in Japan.
The six following scenarios are explained in this chapter.
• 4.2.1, “Sample Scenario of IBM 2212 within the Branch” on page 73
• 4.2.2, “Sample Scenario of IBM 2212 Any-to-Any Calling Plan” on page 82
• 4.2.3, “Sample Scenario of 2212 with PBX and PSTN” on page 93
• 4.2.4, “IBM 9783, 2212 at Headquarters and 2212 at Branch Offices” on page
105
• 4.2.5, “Sample Scenario with IBM 9783 and 2212 at Two HQs and 2212 at
Branch Offices” on page 118
• 4.2.6, “Sample Scenario with Hunt Group Facility in IBM 9783” on page 136
In order to understand the following scenarios, you should understand networking
protocols and IBM 2212 functions. You can skip to the next sections if you are
familiar with these protocols and IBM 2212.
Table 19. General Characteristic of Each Protocol
Notes:
1
Voice packets must be replayed at the same time intervals as which they
were sampled by the sender. This means that packets must arrive in a timely
fashion.
2 If VAD is off, voice traffic bandwidth have to be constant.
Before going to the sample scenarios, this section will briefly explain IBM 2212
functions related to the sample voice configuration with IP and SNA.
Table 20. IBM 2212 Main Functions to Satisfy Each Protocol Summary
Frame Length Timer Bandwidth Burst
IP Long Not Sensitive Large Yes
SNA Short Sensitive Small No
VOICE Very Short Very Sensitive
1 Small No 2
Voice SNA IP
Application E-CELP
CS-ACELP
VAD
Echo Canceller
Jitter Buffer
Lost voice packet
processing
FAX support
DLSw
APPN
HPR
TN3270server
Enterprise Extender
etc.
IPv4
IPv6
etc.
Priority Control BRS Super-Class
Diffsev
BRS
Diffserv
BRS
Diffserv