4 | Telephony Features (W25 only) | |
| The Ericsson W25 provides analogue voice services via the telephony line | |
| interface with high speech quality. | |
4.1 | Line Interface | |
| The POTS (FxS) interface can be configured, i.e. impedance, frequency, | |
| cadence, levels etc. | |
| DTMF dialing is supported. | |
4.1.1 | Ringing Signal | |
| It is possible to configure different ringing signals depending on the call | |
| type. |
|
| The mapping and ring frequency are also configurable. | |
4.1.2 | CLIP, CWI and Voice Mail Alert | |
| The Ericsson W25 supports CLIP (Calling Line Identification Presentation) | |
| service in both | |
| protocols and is also supporting Bellcore standard. | |
| It is possible to configure a country specific profile for the CLIP services. | |
| The Ericsson W25 also supports the CWI (Call Waiting Indication) service | |
| over the POTS interface. If there is a message in the user voice mailbox | |
| this is indicated by the “Message Waiting” LED and by a special tone | |
| played in the telephone. | |
| The “Message Waiting” LED and tone is activated/deactivated by OTA | |
| SMS messages. | |
4.1.3 | Hook Flash | |
| Hook flash functionality for the POTS interface is supported and | |
| configurable. | |
4.2 | UMTS/GSM Supplementary Services | |
| The Ericsson W25 supports UMTS/GSM supplementary services as listed | |
| below. In order to use the services, the operator network must support | |
| them. Offered supplementary services can only be used with a DTMF | |
| telephone connected to the unit. | |
| • Calling Line Identification Presentation (CLIP) | |
| • Calling Line Identification Restriction (CLIR) | |
| • | Call Forwarding Unconditional |
| • Call Forwarding on Mobile Subscriber Busy | |
| • Call Forwarding on No Reply | |
| • Call Forwarding on Mobile Subscriber Not Reachable | |
| • | Call Waiting |
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