GSM Service Codes

The following are the service codes used by GSM networks:

Phone services

Code	Service
10	All kinds of phone services
11	Speech service
12	Data service
13	Fax
14	Datex-J
15	Teletex
16	Short message service (SMS)
18	All data services without SMS
19	All phone services without SMS

Bearer/Carrier services

Code	Service
20	All services
21	All asynchronous services
22	All synchronous services
23	3.1kHz services
24	Synchronous point-to-point connections including PADs All synchronous data services
25	Asynchronous point-to-point connections including PADs All asynchronous data services
26	Data packet sending including PADs All synchronous data packet services
27	Services with PAD-share
29	Digital connection with 12kbps

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