Analogue Extensions: The INPBX provides you with 2, 4or 6 extensions (depending on model). Connect standard telephones, fax machines, Modems, etc. It supports internal communication while both B channels are in use.

Non Blocking: The PBX switch is non blocking and there are no simultaneous extensions to extension calls.

Configuration setting: The Configuration setting can be done by the user using the standard phone connected to the T1 port of the PBX extensions.

Direct Inward Dialing: Each extensions can have its own direct inward dial phone no.

Flexible MSN usage: if you have several MSNs (Phone Nos.) then each MSN no. can be programmed to ring any combination of extensions, even analog or digital port.

Call pick up: Any extensions can be used to answer incoming call on another extension, or calls can be routed to operator extensions.
 
Call Transfer: Call can be transferred to any extensions with or without announcing via beeps, while first call is in progress.
 
Call Waiting: Second incoming call is announced via beeps, while first call is in progress.

Caller ID Presentation: Caller ID is presented on all the extensions wherever the coming calls ring.

Busy call complete: A user can get access to a busy extensions or external line the moment it gets free.

Call Conferencing: It can conduct a 3 way conference call with either two external callers and one external caller and two internal extensions.

Call Hold: An external call can be put on Hold on any of the extensions while a second call I to be made or answered. Multiple Hold support if enabled in CO Switch.

Toll Restriction: you can prevent dialing of STD/ISD calls.

Distinctive Ringing: A distinctive ringing pattern intimates the type of call, such as outside calls, intercom calls, etc.

Global Call Receive: calls having no numbering info will be routed to all ports, overriding MSN.

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Tone generation: For internal calls, on board tone generator provides for the PBX tones such as RBT, BUSY etc.

Emergency Mode: The emergency mode is provided for the S/T port or one extension of the INT-PBX, once there is one a local power failure.

Status Indicators: LED indicators are provided for the Line status and for the extensions also.

Operator Mode: Analog port 1 only can be configured as an operator port and all external calls shall land only on that particular operator port. The calls can be then further transferred to the required extensions by the operator.

S/T Interface: It provided 2 S/T interfaces, which can be used to extend an S/T bus to connect upto eight ISDN Terminal equipment.

MS N (Multiple Subscriber Number): This will enable you to assign the phone number to your phone so that it rings only if one of the programmed phone number is called.

COLR (Connected Line Restriction): With the COLR set to ON, your phone number will not be displayed on the calling party's LCD of incoming call.

CLIP (Calling Line Identification Presentation): The calling Party's phone numbers of incoming party's call be shown on the LCD if the calling party's allows the phone numbered to be presented.