MS38 Series PBXs provide large scale communications facilities to the small businesses and homes with capacity of 4 external lines / 8 extensions, over 100 programmable usage features and convenience of remote programming for servicing and maintenance services.
Models are:

MS38S

• Over 100 programmable usage features
• Usage compliant with special phone sets and standard phones
• Using numerous features of the PBX with the feature phone set (optional)
• Least cost routing (LCR)  
• Accessing the extensions and leaving messages without interrupting the operator using the Auto-Attendant and Voice mail features (optional)  
• More productive and cost-efficient communication by monitoring the rate and time information on phone traffic with the computer monitor thanks to the Net-CM Reporting Software (optional)  
• Usage of many PBX features rapidly and effectively by monitoring the key-in operations performed by the user on the phone from the computer monitor thanks to the Net-Console (CTI) Software (optional)  
• Automatic fax forwarding
• Detection of polarity reversal and charging signal
• Door opening relay and diaphone connection (optional)  
• Convenience of remote programming for service and maintenance operations

MS38C
Additional to the features of MS38S model:

• Provides caller identification (Caller ID) features for all extensions. (This feature is available on lines supported by Türk Telekom) 
• Provides SMS (Short Message Service) sending/receiving features for all extensions. (This feature is available on lines supported by Türk Telekom) 
• Provides storage battery to prevent power cut-offs from affecting the PBX

 Operation Features

• Emergency line 
• Intervention 
• Music on hold 
• Call transfer 
• Call forwarding (internal or external) 
• External Line to External Line Connection 
• Automatic external line answering 
• External line authorization restriction 
• Direct line 
• Diaphone
• Direct access to an extension 
• Direct dialing-in in power cut-offs 
• Flexible night service 
• Fax forwarding 
• Delayed emergency line 
• Real rate charging 
• External music input 
• Reminding service 
• Extension/external line grouping 
• Door opening 
• Conference 
• Warning the busy extension 
• Common and individual memory 
• Automatic calling 
• Automatic external line control 
• Programmable external line call time 
• Do not disturb 
• Line selection 
• Serial transfer 
• Queuing (extension/external line) 
• Redial 
• Encrypted locking 
• Remote Programming

• Least cost routing (LCR) feature 
• Accessing the extensions and leaving messages without interrupting the operator using the auto-attendant and voice mail features (optional) 
• More productive and cost-efficient communication by monitoring the rate and time information on phone traffic with the computer monitor thanks to the Net-CM reporting software (optional) 
• Usage of many PBX features rapidly and effectively by monitoring the key-in operations performed by the user on the phone from the computer monitor thanks to the Net-Console (CTI) software (optional) 
• Communication with the door from any extension phone in the office and opening the door by entering a key in the phone with the diaphone unit (optional) 
• Using numerous features of the PBX with the feature phone set (optional)
• By GSM terminals ensuring that calls made from phones connected to the PBX in the company to the mobile phones are charged with cheaper GSM call rates
• By Voip Gateway, lowering the communication costs of the companies by providing audio and fax communication over IP network
• Able to connect interfaces and the PBX to external devices such as printers, computers, radios, CD players etc.
• GT SMS Server, allowing PCs which work with Karel GSM Gateway (FCT) products to receive by SMS, operator broadcast messages coming with SMS sending from the computers on the network that the PC running this software is connected to

 Technical Features
Capacity: 4 external lines / 8 extensions + 1 diaphone channel 
Control:
AM188ES Processor
EPROM (1 Mbit)
EEPROM (4 Kbyte)
512 Kbit Static RAM Redundant with NiMh Battery
Switching: Space Shared CMOS Crosspoint Switch
Tones: Standard
Supply: AC220V, 50-60 Hz
Power Consumption: MS38S-C: 7 Watt at quiet
Extension Connection: Circuit resistance including the phone set 1200 Ohm, Standard DP/DTMF phones, special set connectivity
External line connection: DP/DTMF signalling, 12/16 kHz charging signal detection, polarity reversal detection (MS26S excluded)
Interfaces: RS232, external music connection
Ambient Conditions: 0 to 45 C° temperature, 20% to 80% uncondensed humidity
Dimensions:
24,5  X 28,2 X 4.3 cm

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