McDewey

needs to take into account.
Single-Hop Connection
Figure 6 - 1: Single Hop Example Connection

From this figure, a typical one-hop connection over a public frame relay connection can have the delay budget shown Table 6.1.
Table 6 .1: Single Hop Delay Calculation
Note: Since queuing delay and the variable component of the Network delay is already accounted within the de-jitter buffer calculations, the Total delay is effectively only the sum of all the Fixed Delay. In this case the total delay is 138 ms.
Two Hops on a Public Network with a C7200 that Acts as a Tandem Switch
Figure 6 - 2: Two Hops Public Network Example with Router/Gateway Tandem Delay Type
Fixed (ms)
Variable (ms)
Coder Delay, χ1
18

Packetization Delay, π1
30

Queuing/Buffering, ß1

8 Serialization Delay (64 kbps), σ1
5

Network Delay (Public Frame), ω1
40 25 De-jitter Buffer Delay, Δ1
45

Totals 138 33 Page 11 of 18 Cisco - Understanding Delay in Packet Voice Networks 7/31/2008 http://kbase.cisco.com/paws/servlet/ViewFile/5125/delay-details.xml?convertPaths=1