Chapter 31 Product Specifications
Table 184 | Firmware Specifications (continued) | |
NAT/SUA |
| Port Forwarding |
|
| 1024 NAT sessions |
|
| Multimedia application |
|
| PPTP under NAT/SUA |
|
| IPSec passthrough |
|
| SIP ALG passthrough |
|
|
|
VPN |
| 2 IPSec tunnels |
|
| IKE and Manual Key Management |
|
| AH and ESP Protocol |
|
| DES, 3DES and AES Encryption |
|
| |
|
| Tunnel and Transport Mode Encapsulation |
|
| IPSec NAT Traversal |
|
| NETBIOS |
|
|
|
31.3 Voice Specifications
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"
To take full advantage of the supplementary phone services available through the ZyXEL Device's phone ports, you may need to subscribe to the services from your VoIP service provider.
Not all features are supported by all service providers. Consult your service provider for more information.
Table 185 Voice Features
Call Fallback | Call fallback allows you to set the ZyXEL Device to automatically use the PSTN/ |
| ISDN connection for outgoing calls if the SIP account is not working, or to use |
| the SIP account for outgoing calls if the PSTN/ISDN port is unplugged or not |
| working. |
|
|
Call Park and | Call park and pickup lets you put a call on hold (park) and then continue the call |
Pickup | (pickup). You can continue the call on the same phone, or another phone |
| connected to the ZyXEL Device. The caller must still pay while the call is |
| parked. |
| When you park the call, you enter a number of your choice (up to eight digits), |
| which you must enter again when you pick up the call. If you do not enter the |
| correct number, you cannot pickup the call. This means that only someone who |
| knows the number you have chosen can pick up the call. |
| You can have more than one call on hold at the same time, but you must give |
| each call a different number. |
|
|
Call Return | With call return, you can place a call to the last number that called you (either |
| answered or missed). The last incoming call can be through either SIP or |
| PSTN. |
|
|
| 427 |
|
|