No mandatory protocol between the Service Centre (SC) and the Mobile S witching Centre (MSC) below the transfer layer is specified by GSM; th is is a matter of agreement between SC and PLMN operators. This ETSI Technical Report (ETR) specifies three approaches to the spe cification of protocol stacks of communication protocols for the purpo se of relaying short messages and alerts between Short Message Service Centres and Gateway/Interworking MSCs (GMSC) for the Short Message Se rvice (SMS). One approach is based upon use of the complete OSI refere nce model (see X.200), another approach is based upon the use of only the lower three OSI layers, and another approach is based upon the use of CCITT Signalling System No. 7 (see Q.700). Alternative protocol stacks are specified via ASN.1 encoding rules (se e X.208 and X.209). These alternative protocol stacks are examples for the implementation of the Short Message Relay Layer (SM-RL). The requ irements placed upon the Short Message Relay Layer are briefly describ ed in clause 9 of GSM 03.40. Specifications are based upon individual contributions. Any judgement concerning functionality, completeness and advantages/disadvantages of implementation is intentionally omitted.
- Edition:
- 1
- Published:
- 11/01/1996
- Number of Pages:
- 43
- File Size:
- 1 file , 110 KB
- Note:
- This product is unavailable in Russia, Ukraine, Belarus
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