Cinterion MC55i Cinterion MC55i Terminal
GPRS modem with serial conn.

Cinterion MC55i is a quad-band GSM/GPRS modem terminal with serial connection (RS-232) and voice, data/fax, SMS capabilities.
Successor of Siemens TC35i and Siemens MC35i models.


Cinterion (ex-Siemens) Datasheet


Siemens General features

  • Quad-Band GSM 850/900/1800/1900 MHz
  • GPRS multi-slot class 10
  • Compliant to GSM phase 2/2+
  • Output power:
    • Class 4 (2 W) for EGSM850
    • Class 4 (2 W) for EGSM900
    • Class 1 (1 W) for GSM1800
    • Class 1 (1 W) for GSM1900
  • Control via AT commands
  • SIM Application Toolkit
  • Supply voltage range: 8 ... 30 V
  • Operating temperature: -30°C to +75°C
  • Dimensions: 65 x 74 x 33 mm
  • Weight: 130 g

Specification for GPRS data transmission

  • GPRS class 10: max. 85.6 kbps (downlink)
  • Mobile station class B

Specification for CSD data transmission

  • Up to 14.4 kbit/s
  • V.110
  • Non-transparent mode
  • USSD support

Specification for SMS

  • Point-to-point MO and MT
  • SMS cell broadcast
  • Text and PDU mode

Specification for fax

  • Group 3, class 1, 2

Specification for voice

  • High quality voice support
  • Handsfree operation
  • FR, HR, EFR and AMR speech codec support


  • Antenna connector FME (male)
  • Plug-in power supply
  • Handset audio interface
  • Mini-SIM card reader
  • V.24/V.28 interface on the 9-terminal sub-D socket
  • Operating status LED


  • R&TTE, GCF, CE
  • Local approvals and network operator certifications
  • ROHS & WEEE compliant


 This product is RoHS & WEEE compliant.



  • SMS for your business

    - Working teams
    Contact your customers and mobile co-workers by SMS.
    - Mobile marketing
    Contact your audience with friendly SMS communication.

  • SMS for public services

    - Services and associations
    Contact service subscribers and associates by SMS.
    - Commercial consultants
    Remind fiscal deadlines to your customers with an SMS.
    - Medical offices
    Send appointment reminders to your patients by SMS.
    - Schools
    Keep in contact with parents and students by SMS.

  • Do more with SMS...


We'll be closed for holidays
from June 12 to 22, 2017.

Modem orders collected during this period will be delivered in the following workdays.

SMS software licenses will be released within 48 hours, even during this period.