Cisco ASR 1000 Configuration Guide

24-3
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 24 Overview of the Cisco DSP SPA for ASR 1000 Series
Overview of the Cisco DSP SPA
Understanding Codecs and Maximum Channels Supported
Each SPA-DSP comprises of seven SP2603 DSP chips having a total of 21 DSP cores (3 DSP cores per
SP2603). Based on the complexity of codec (low, medium, high), the density or maximum number of
channels supported per DSP core and maximum channels supported per SPA-DSP are defined.
Following table provides a matrix for maximum channels supported on DSP core and SPA-DSP and the
complexity type:
Ta b l e 24-2 Codec -Complexity-and-Density-Supported Matrix
Ta b l e 24-3 SPA-DSP-Supported Transcoding Codec List
Codec Complexity or Service
Maximum supported Density per
DSP Core
Maximum supported Density per
SPA-DSP
LC (Low complexity)
Voice/xcode
43 903
MC (Medium complexity)
Voice/xcode
28 588
HC (High Complexity)
Voice/xcode
17 357
ISAC Voice/xcode 8 168
Codec Name Codec Description
g711alaw G.711 A Law 64000 bps
g711ulaw G.711 u Law 64000 bps
g722-64 G722r64
g723r53 G.723.1 5300 bps
g723r63 G.723.1 6300 bps
g726r16 G.726 16000 bps
g726r24 G.726 24000 bps
g726r32 G.726 32000 bps
g726r40 G.726 40000 bps
g728 G.728 codec
g729abr8 G.729ab 8000 bps
g729ar8 G.729a 8000 bps
g729br8 G.729b 8000 bps
g729r8 G.729 8000 bps
gsmamr-nb GSMAMR codec
ilbc ILBC codec
isac ISAC codec

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English