Howto:General information for compact flash cards

Applies To

This information applies to

• IP 6000, V6 SR1
• IP 800, V6 SR1
• IP 302/305, V6 SR1

More Information

• Which size should the card have?

The card should have at least 64 MB, because it uses FAT32.

• Is there a formula to calculate the space for one mail box user?

Assuming we have G.711, a voice mail (120 seconds maximum) has 960 kByte, because 8 kByte/s are used and assuming we have G.729, a voice mail has 120 kByte, because 1 kByte/s is used. So it's now on you to estimate the amount of voice mails one of your users will have and how many voice mail users you have.

• Is there a recommended card speed?

No. Also slower cards can be used and there is no advantage to use high speed cards with innovaphone devices.

• Are there recommended manufacturers/cards?

Yes. We recommend to use SanDisk cards, because we made the best experiences with them. But in general, each card should be supported. For SanDisk cards, please use Ultra II or above (Extreme III/IV).

• Is it possible to put MOH on the compact flash card?

Yes, this is possible.

• How about wear leveling on the Compact Flash cards? What are you doing in that regard?

Wear leveling is done by compact flash card hardware. Please keep in mind: the more free space do you have on the card te better wear leveling works. SunDisk cards known to have very good wear leveling performance.

Known Problems

Older revisions of the ip6000 have problems with certain cf card manufacturers. Please use the recommended Sandisk cards here. Revisions since hardware 300 do not have this issue anymore.

Related Articles

Installing the voicemail/music on hold on a compact flash card