1. TDE600 v3 | DSP Impact, Oct. 2009. Presentation Ver. 1.0 EVERY CALL MATTERS SYSTEM ENHANCEMENTS IMPACT ON DSP KX-TDE600 v3

2. EVERY CALL MATTERS TDE600 v3 | DSP Impact, Oct. 2009. Presentation Ver. 1.0 PlatformVersionIP CS Support IP Extensions On IPCMPR Card Total IP Trunks On IPCMPR Card DSP Impact due to Version Up TDE600 V2No6432 Yes V3Yes12864 1 System Capacity Enhancements Notes: 1. 64 IP trunks mean – Max 32 SIP trunks and Max 32 H.323 trunks at the same time. As System Capacity for the TDE600 communication platform improves, the DSP implications need to be well understood.

3. EVERY CALL MATTERS TDE600 v3 | DSP Impact, Oct. 2009. Presentation Ver. 1.0 Calls between TDM and SIP Trunks MPR Card DSP Impact due to 64 Channel IP trunks – 32 SIP trunks and 32 H.323 trunks (Total 64 Channels) Option Card SIP Trunk DPT/SLT/PS Backplane 49 SIP Trunk CODEC DSP16DSP64 G.71132 calls 1 32 calls 2 G.72912 calls32 calls* -*G.729 requires more DSP resource than G.711. - Although DSP64 can handle up to 51 calls with G.729, however this is limited by Max SIP trunk of 32. DSP No Change H.323 Trunk Max.32 Note: 1.Limit of DSP16 2.Limit reached due to max 32 SIP trunks Max.32 TDE600 v3 SLT/FAX

4. EVERY CALL MATTERS TDE600 v3 | DSP Impact, Oct. 2009. Presentation Ver. 1.0 Calls between IP PT and TDM MPR Card DSP Impact due to 128 IP PT – Calls between IP-PT and ISDN/Analogue CO/DPT/SLT/PS DPT/SLT/PS Backplane 49 Note: 1.Limit of DSP16 2.Limit reached due to 49 Channel limit TDE600 v3 SLT/FAX IP-PT CODECDSP16DSP64 G.71149 calls 1 49 2 G.72916 calls49 PRI IP-PT: Max.64→128 Option Card DSP No Change

5. EVERY CALL MATTERS TDE600 v3 | DSP Impact, Oct. 2009. Presentation Ver. 1.0 IP-PT to SIP Trunk Communication MPR Card Backplane 49 DSP No Change SIP Trunk CODECIP-PT CODECDSP16DSP64 G.711 32 calls 1 G.729 8 calls32 calls 1 G.711G.729 12 calls32 calls 1 G.729G.711 Note: 1.Limit reached due to max 32 SIP trunks SIP trunk Max.32 IP-PT: Max.64→128 TDE600 v3

6. EVERY CALL MATTERS TDE600 v3 | DSP Impact, Oct. 2009. Presentation Ver. 1.0 IP-CS CODEC DSP16DSP64 G.71149 calls 1 49 2 G.72916 calls49 Calls between IP CS and DPT MPR Card DSP Impact due to IP CS – Calls between IP-CS and ISDN/Analogue CO/DPT/SLT/PS (via Normal CS) DPT/SLT/PS Backplane 49 Note: 1.Limit of DSP16 2.Limit reached due to 49 Channel limit SLT/FAX PRI IP-CS: Max 16 Option Card DSP No Change TDE600 v3

7. EVERY CALL MATTERS TDE600 v3 | DSP Impact, Oct. 2009. Presentation Ver. 1.0 IP-CS to SIP Trunk Communication MPR Card Backplane 49 DSP No Change Note: 1.Limit reached due to DSP16 resources. 2.IP-CS connection does not support P2P connection. Therefore, IP-CS takes one TDM-IP Channel and IP-Trunk also takes one TDM-IP Channel – for one call. One IP-CS to IP-Trunk thus takes two TDM-IP Channels. Maximum no. TDM- IP Channels is thus 49/2=24.5 => 24 SIP trunk Max.32IP-CS: Max 16 SIP Trunk CODECIP-CS CODECDSP16DSP64 G.711 21 calls24 calls 2 G.711G.72910 calls24 calls 2 G.729 6 calls 1 24 calls 2 TDE600 v3