Expansion and Connection Options

• External/trunk
• 38 external calls simultaneously possible
• Up to 38 VoIP channels external
• Up to 1 S_2M primary rate connection (PRI)
• Up to 16 S₀ trunk line ports (up to 4 in conjunction with S_2M primary rate port)
• Internal/extensions
• 112 subscriber ports possible
• Up to 64 VoIP channels internal
• Up to 56 S₀ ports internal
• Up to 72 U_P0 ports
• Up to 64 analog ports (symmetrical)
• Up to 16 voicemail and fax channels
• System telephony for up to 112 COMfortel system telephones (ISDN/VoIP)
• DECT system telephony for up to 48 handsets COMfortel DECT 900C/900
• Door phone and switching connections
  (with 2TSM analog Module/s)
• Connection for up to 8 door phone systems
  (FTZ 123 D12-0 compliant) without loss of an analog port, e.g. with TFS-Dialog 100
• Up to 16 door bell inputs, 4 alternatively usable as alarm input
• Up to 8 door openers, operated via telephone
• Up to 24 relays for door terminal and universal switching functions (1–2 relays needed for door terminal)
• 4 connections for a second bell
• Additional connections
• 1 audio input for external Music on Hold
  (with 2TSM analog Module)
• 4 audio outputs, e.g. for announcements
  (with 2TSM analog Module/s)
• 1 Ethernet port 10/100 Base-T (10/100 MBit/s)
• 1 USB port (Full-Speed 1.1)
• 1 serial port (V.24) for printer connection
• RJ-45 Western jacks for subscribers and door phone connections via additional BU-xxx connection adapters at the front (6 x BU-P16 included)
• Expansion modules
• 9 module slots (15 with COMmander Business Xtension), which can be equipped with:
  – 4 x COMmander 8VoIP Module
  – 4 x COMmander 16VoIP Module
  – 1 x COMmander S_2M Module
  – 12 x COMmander 4S₀ Module (min. Rev. 2)
  – 9 x COMmander 8S₀ Module
  – 9 x COMmander 8U_P0 Module
  – 8 x COMmander 8a/b Module
  – 1 x COMmander VMF Module
  – 4 x COMmander 2TSM analog Module

VoIP (Internet telephony / internal IP telephony)

• SIP compliant (RFC 3261)
• 2 VoIP channels (ext.l/int.) (basic configuration)
• 8 to 64 VoIP channels (ext./int.)
  (with 8VoIP/16VoIP Module/s)
• Internet telephony
  – 100 SIP accounts simultaneously,
     incl. SIP trunking support
  – VoIP codec: G.711 (basic configuration)
  – VoIP codecs: G.711, G.723.1, G.726, G.729A,
     iLBC (with 8VoIP/16VoIP Module/s)
  – Fax over IP (T.38 acc. to ITU-T)
     (with 8VoIP/16VoIP Module/s)
  
• Internal IP telephony with:
  – system telephones COMfortel VoIP 2500 AB
  – standard SIP phones
  – external extensions, mobile clients
  – soft phones (e.g. X-Lite, Ninja, XMeeting)
  – VoIP codec: G.711 (basic configuration)
  – VoIP codecs: G.711, iLBC
     (with 8VoIP/16VoIP Module/s)
• Encoded signalling (SIPS) and data transmission (SRTP) (with 8VoIP/16VoIP Module/s)
• Excellent sound quality with Echo Compensation and Comfort Noise Generation (CNG)

ISDN Features

• Call Waiting (CW)
• Number and name presentation (CLIP/CNIP)²
  at the analog ports incl. date and time, name display (CNIP) from the central telephone book
• Transfer of customer-specific calling number informat. with outgoing calls (CLIP no screening)
• Presentation of the forwarder´s number (RgN)
• Presentation restriction of the own telephone number (CLIR)
• Destination number present. to the caller (COLP)
• Presentation restriction of the destination number to the caller (COLR)
• Call charge information at the end (AOCE) and during (AOCD) a call
• Call Forwarding on busy (CFB), no reply (CFNR), unconditional (CFU), configuration controlled
• Call forwarding of a DDI (CD (PR)), configuration controlled
• Automatic callback on busy (CCBS) and no response (CCNR)
• X.31 on the internal S0 port (X.25 via D channel)⁵

Call Data Management

• Call data recording⁵ with maximum 18,000 records (6,000 in scope of delivery)
• Separation of private and business calls
• Project assignment of calls⁵ (2- to 6-digit project numbers)
• Call charge accounting per extension¹, charge limit possible
• Call charge pulses for analog extensions possible¹
• Call data management with Web interface
• Convenient filter and CSV export functions

Central Telephone Book

• 400 numbers, individually select. for Call Through
• 10 emergency numbers with special rights
• Number-to-name function²
• Short-code dial authorisation (additional to the line authorisation)
• Administration via Web interface
• CSV import of existing telephone books

Safety Functions

• Secure access to the web interface (https)
• Alarm functions (with 2TSM Module/s)
• 6 trunk line authorisation modes
• Selectable authorisation levels, passw. protected
• Private trunk line access with user-related password, usable from all extensions
• Off-hook emergency dialling (e.g. baby call)
• Priority call
• 10 sets of numbers for barred and allowed incoming and outgoing calls, from a pool of 100 numbers
• 10 emergency numbers with special rights
• Prioritised emergency call
• Room monitoring internal/external