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Chapter 6 <br />

The average number of DSPs needed for this configuration is 12.<br />

6.7.2.5 Average Configuration in Mixed Telephony: IP and Conventional Telephony<br />

(Reflexes)<br />

Note:<br />

Configuration possibilities are not limited to the example given in this section.<br />

- 1 Attendant station (non-IP)<br />

- 5 IP sets<br />

- 40 conventional Reflexes stations<br />

- 6 T0 accesses<br />

The number of DSPs needed for this configuration is 4.<br />

6.7.2.6 Medium Configuration for Mixed Telephony + H.323/SIP Gateway<br />

Note:<br />

Configuration possibilities are not limited to the example given in this section.<br />

- 1 Attendant station (non-IP)<br />

- 5 IP sets<br />

- 40 conventional Reflexes stations<br />

- 4 T0 accesses<br />

6.7.2.7 Bandwidth<br />

- 5 VoIP network accesses<br />

- The number of DSP channels needed for IP telephony is Min(5,9) = 5<br />

- The H.323/SIP gateway requires 5 additional DSP channels<br />

The average number of DSPs needed for this configuration is 9.<br />

In an H.323/SIP gateway configuration, a bandwidth can be associated with each ARS table<br />

entry to a remote H.323/SIP gateway.<br />

Number of DSPs depending on call type:<br />

- PIMphony IP or IP Phone<br />

• IP Phone - IP Phone: 0 DSP<br />

• IP Phone in conference: 1 DSP<br />

• IP Phone or PIMphony IP - Reflexes station or analog/ISDN network: 1 DSP<br />

• IP Phone or PIMphony IP - PC H.323 or H.323 gateway (IP trunk): 2 DSPs<br />

- PC - PC: 0 DSP<br />

- PC with internal H.323 gateway - PC with internal H.323 gateway: 1 DSP<br />

The following table indicates the potential number of simultaneous calls depending on the<br />

bandwidth reserved for VoIP calls:<br />

6-118

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